diff --git a/.gitignore b/.gitignore
index adcda08..a985dbd 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,4 @@
-*.gemspec
-*.gem
+t*.gem
 *.rbc
 .bundle
 .config
diff --git a/README.md b/README.md
index 765a3c5..2ac383d 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-Slogger
+Semlogger
 =======
 
-(Semi-)Structured Logger for Ruby (and Rails)
\ No newline at end of file
+(Semi-)Structured Logger for Ruby (and Rails)
diff --git a/Rakefile b/Rakefile
index e5fad5a..68654fb 100644
--- a/Rakefile
+++ b/Rakefile
@@ -4,11 +4,11 @@ require 'rake'
 begin
   require 'jeweler'
   Jeweler::Tasks.new do |gem|
-    gem.name = "slogger"
+    gem.name = "semlogger"
     gem.summary = %Q{(Semi-)Structured Logger}
     gem.description = %Q{(Semi-)Structured Logger for Ruby (and Rails)}
     gem.email = %w[Denis.Knauf@gmail.com]
-    gem.homepage = "http://github.com/DenisKnauf/Slogger"
+    gem.homepage = "http://github.com/DenisKnauf/semlogger"
     gem.authors = ["Denis Knauf"]
     gem.files = %w[AUTHORS README.md VERSION LICENSE lib/**/*.rb]
     gem.require_paths = %w[lib]
@@ -52,7 +52,7 @@ Rake::RDocTask.new do |rdoc|
   end
 
   rdoc.rdoc_dir = 'rdoc'
-  rdoc.title = "Slogger #{version}"
+  rdoc.title = "semlogger #{version}"
   rdoc.rdoc_files.include 'README.md'
   rdoc.rdoc_files.include 'AUTHORS'
   rdoc.rdoc_files.include 'LICENSE'
diff --git a/lib/slogger.rb b/lib/semlogger.rb
similarity index 85%
rename from lib/slogger.rb
rename to lib/semlogger.rb
index a3dc744..57b17e9 100644
--- a/lib/slogger.rb
+++ b/lib/semlogger.rb
@@ -1,9 +1,9 @@
 require 'json'
 
-class Slogger < ::Logger
+class Semlogger < ::Logger
 	def initialize logdev = nil, *a, &e
 		case logdev
-		when String, nil then logdev = ::Slogger::Writer.new logdev
+		when String, nil then logdev = ::Semlogger::Writer.new logdev
 		end
 		@level, @data, @tags, @logdev = DEBUG, {}, [], logdev
 	end
@@ -75,8 +75,8 @@ class Slogger < ::Logger
 	end
 end
 
-require 'slogger/rotate'
-require 'slogger/multiplex'
-require 'slogger/rack'
-require 'slogger/filter'
-require 'slogger/writer'
+require 'semlogger/rotate'
+require 'semlogger/multiplex'
+require 'semlogger/rack'
+require 'semlogger/filter'
+require 'semlogger/writer'
diff --git a/lib/slogger/filter.rb b/lib/semlogger/filter.rb
similarity index 71%
rename from lib/slogger/filter.rb
rename to lib/semlogger/filter.rb
index 8e68265..cf3dde8 100644
--- a/lib/slogger/filter.rb
+++ b/lib/semlogger/filter.rb
@@ -1,4 +1,4 @@
-class Slogger::Filter
+class Semlogger::Filter
 	attr_accessor :level, :logdev
 
 	def initialize level, logdev
@@ -15,9 +15,9 @@ end
 
 %w[debug info warn error fatal].each do |level|
 	eval <<-EOC
-		class ::Slogger::F#{level.camelcase} < Slogger::Filter
+		class ::Semlogger::F#{level.camelcase} < Semlogger::Filter
 			def initialize *a
-				super Slogger::#{level.upcase}, *a
+				super Semlogger::#{level.upcase}, *a
 			end
 		end
 	EOC
diff --git a/lib/slogger/formatter.rb b/lib/semlogger/formatter.rb
similarity index 93%
rename from lib/slogger/formatter.rb
rename to lib/semlogger/formatter.rb
index 5acfaf1..d0379dc 100644
--- a/lib/slogger/formatter.rb
+++ b/lib/semlogger/formatter.rb
@@ -1,4 +1,4 @@
-class Slogger::Formatter < ::Logger::Formatter
+class Semlogger::Formatter < ::Logger::Formatter
 	def initialize tags, data
 		@tags, @data = tags, data
 	end
diff --git a/lib/slogger/multiplex.rb b/lib/semlogger/multiplex.rb
similarity index 95%
rename from lib/slogger/multiplex.rb
rename to lib/semlogger/multiplex.rb
index e10bb84..4c8430a 100644
--- a/lib/slogger/multiplex.rb
+++ b/lib/semlogger/multiplex.rb
@@ -1,4 +1,4 @@
-class Slogger::Multiplex
+class Semlogger::Multiplex
 	def initialize( *dests)  @__dests__ = dests  end
 
 	def write( *a, &e)  @__dests__.each {|d| d.write *a, &e }  end
diff --git a/lib/slogger/rack.rb b/lib/semlogger/rack.rb
similarity index 93%
rename from lib/slogger/rack.rb
rename to lib/semlogger/rack.rb
index f0cf227..3032726 100644
--- a/lib/slogger/rack.rb
+++ b/lib/semlogger/rack.rb
@@ -1,4 +1,4 @@
-class Slogger::Rack < Rails::Rack::Logger
+class Semlogger::Rack < Rails::Rack::Logger
 	def initialize app, tags = nil, data = nil
 		super app, tags
 		@data = data
diff --git a/lib/slogger/rotate.rb b/lib/semlogger/rotate.rb
similarity index 95%
rename from lib/slogger/rotate.rb
rename to lib/semlogger/rotate.rb
index 35142e0..a658477 100644
--- a/lib/slogger/rotate.rb
+++ b/lib/semlogger/rotate.rb
@@ -1,4 +1,4 @@
-class Slogger::Rotate
+class Semlogger::Rotate
 	attr_reader :file
 
 	def filename()  @filename.dup  end
diff --git a/lib/slogger/tailer.rb b/lib/semlogger/tailer.rb
similarity index 95%
rename from lib/slogger/tailer.rb
rename to lib/semlogger/tailer.rb
index 2afbc24..bf823ef 100644
--- a/lib/slogger/tailer.rb
+++ b/lib/semlogger/tailer.rb
@@ -1,4 +1,4 @@
-class Slogger::Tailer < Rails::Rack::LogTailer
+class Semlogger::Tailer < Rails::Rack::LogTailer
 	def initialize app, log = nil
 		@app = app
 		log ||= Rails.root.join( 'log', Rails.env).to_s.gsub('%', '%%') + '.%Y-%m-%d.%$.log'
diff --git a/lib/slogger/writer.rb b/lib/semlogger/writer.rb
similarity index 75%
rename from lib/slogger/writer.rb
rename to lib/semlogger/writer.rb
index a41a9af..a7dd419 100644
--- a/lib/slogger/writer.rb
+++ b/lib/semlogger/writer.rb
@@ -1,9 +1,9 @@
-class Slogger::Output
+class Semlogger::Output
 end
 
-class Slogger::Writer < Slogger::Output
+class Semlogger::Writer < Semlogger::Output
 	def initialize logdev = nil
-		@logdev = logdev || ::Slogger::Rotate.new( ::Rails.root.join( 'log', ::Rails.env).to_s.gsub('%', '%%') + '.%Y-%m-%d.%$.log')
+		@logdev = logdev || ::Semlogger::Rotate.new( ::Rails.root.join( 'log', ::Rails.env).to_s.gsub('%', '%%') + '.%Y-%m-%d.%$.log')
 	end
 
 	def add severity, time, progname, data, tags, message
@@ -11,7 +11,7 @@ class Slogger::Writer < Slogger::Output
 	end
 end
 
-class Slogger::Printer < Slogger::Output
+class Semlogger::Printer < Semlogger::Output
 	def initialize logdev = nil
 		@logdev = logdev || $stdout
 		@last_reqid = nil
diff --git a/lib/slogger/transaction.rb b/lib/slogger/transaction.rb
deleted file mode 100644
index 5ea8676..0000000
--- a/lib/slogger/transaction.rb
+++ /dev/null
@@ -1,28 +0,0 @@
-class Slogger::Transaction
-	include UUIDTools
-	attr_reader :app, :id, :default_id
-
-	class <<self
-		attr_accessor :transaction
-		def to_s()  transaction.to_s  end
-		def id()  transaction.id  end
-	end
-
-	def new_id
-		UUID.random_create
-	end
-
-	def initialize app, logger = nil, default_id = nil
-		@app, @default_id = app, default_id || new_id
-		(logger||self.class).transaction = self
-	end
-
-	def call *paras
-		@id = new_id
-		@app.call *paras
-	ensure
-		@id = @default_id
-	end
-
-	def to_s()  @id.to_s  end
-end
diff --git a/semlogger.gemspec b/semlogger.gemspec
new file mode 100644
index 0000000..d85bf52
--- /dev/null
+++ b/semlogger.gemspec
@@ -0,0 +1,51 @@
+# Generated by jeweler
+# DO NOT EDIT THIS FILE DIRECTLY
+# Instead, edit Jeweler::Tasks in Rakefile, and run 'rake gemspec'
+# -*- encoding: utf-8 -*-
+
+Gem::Specification.new do |s|
+  s.name = %q{semlogger}
+  s.version = "0.0.1"
+
+  s.required_rubygems_version = Gem::Requirement.new(">= 0") if s.respond_to? :required_rubygems_version=
+  s.authors = ["Denis Knauf"]
+  s.date = %q{2012-05-14}
+  s.description = %q{(Semi-)Structured Logger for Ruby (and Rails)}
+  s.email = ["Denis.Knauf@gmail.com"]
+  s.extra_rdoc_files = [
+    "LICENSE",
+    "README.md"
+  ]
+  s.files = [
+    "AUTHORS",
+    "LICENSE",
+    "README.md",
+    "VERSION",
+    "lib/semlogger.rb",
+    "lib/semlogger/filter.rb",
+    "lib/semlogger/formatter.rb",
+    "lib/semlogger/multiplex.rb",
+    "lib/semlogger/rack.rb",
+    "lib/semlogger/rotate.rb",
+    "lib/semlogger/tailer.rb",
+    "lib/semlogger/writer.rb"
+  ]
+  s.homepage = %q{http://github.com/DenisKnauf/semlogger}
+  s.require_paths = ["lib"]
+  s.rubygems_version = %q{1.3.7}
+  s.summary = %q{(Semi-)Structured Logger}
+
+  if s.respond_to? :specification_version then
+    current_version = Gem::Specification::CURRENT_SPECIFICATION_VERSION
+    s.specification_version = 3
+
+    if Gem::Version.new(Gem::VERSION) >= Gem::Version.new('1.2.0') then
+      s.add_runtime_dependency(%q<json>, [">= 0"])
+    else
+      s.add_dependency(%q<json>, [">= 0"])
+    end
+  else
+    s.add_dependency(%q<json>, [">= 0"])
+  end
+end
+