diff --git a/README.rdoc b/README.rdoc
new file mode 100644
index 0000000..2d53849
--- /dev/null
+++ b/README.rdoc
@@ -0,0 +1,7 @@
+= SANE FFI
+
+Scanner Access Now Easier in Ruby.
+
+== Copyright
+
+Copyright (c) 2011 Jakub Kuźma
diff --git a/lib/sane.rb b/lib/sane.rb
index 8c43653..9bb1fe1 100644
--- a/lib/sane.rb
+++ b/lib/sane.rb
@@ -15,7 +15,7 @@ class Sane
 
   def self.open
     instance.send(:init)
-    yield instance
+    yield(instance)
   ensure
     instance.send(:exit)
   end
@@ -52,12 +52,12 @@ class Sane
     devices_pointer_pointer = FFI::MemoryPointer.new(:pointer)
     check_status!(API.sane_get_devices(devices_pointer_pointer, 0))
     devices_pointer = devices_pointer_pointer.read_pointer
-    [].tap do |result|
-      until devices_pointer.read_pointer.null?
-        result << API::Device.new(devices_pointer.read_pointer).to_hash
-        devices_pointer += FFI.type_size(:pointer)
-      end
+    result = []
+    until devices_pointer.read_pointer.null?
+      result << API::Device.new(devices_pointer.read_pointer).to_hash
+      devices_pointer += FFI.type_size(:pointer)
     end
+    result
   end
 
   def open(device_name)
@@ -156,14 +156,14 @@ class Sane
   end
 
   def ensure_not_initialized!
-    raise "SANE library is already initialized" if initialized?
+    raise("SANE library is already initialized") if initialized?
   end
 
   def ensure_initialized!
-    raise "SANE library is not initialized" if not_initialized?
+    raise("SANE library is not initialized") if not_initialized?
   end
 
   def check_status!(status)
-    raise Error.new(strstatus(status), status) unless status == :good
+    raise(Error.new(strstatus(status), status)) unless status == :good
   end
 end
diff --git a/lib/sane/api.rb b/lib/sane/api.rb
index 99d001a..b8a78d4 100644
--- a/lib/sane/api.rb
+++ b/lib/sane/api.rb
@@ -13,7 +13,14 @@ class Sane
     class Device < FFI::Struct
       layout :name, :string, :vendor, :string, :model, :string, :type, :string
 
-      def to_hash; {name: self[:name], vendor: self[:vendor], model: self[:model], type: self[:type]} end
+      def to_hash
+        {
+          :name => self[:name],
+          :vendor => self[:vendor],
+          :model => self[:model],
+          :type => self[:type]
+        }
+      end
     end
 
     class OptionDescriptor < FFI::Struct
@@ -22,13 +29,32 @@ class Sane
       end
       layout :name, :string, :title, :string, :desc, :string, :type, :value_type, :unit, :unit, :size, :int, :cap, :int, :constraint_type, ConstraintType
 
-      def to_hash; {name: self[:name], title: self[:title], desc: self[:desc], type: self[:type], unit: self[:unit], size: self[:size], cap: self[:cap]} end
+      def to_hash;
+        {
+          :name => self[:name],
+          :title => self[:title],
+          :desc => self[:desc],
+          :type => self[:type],
+          :unit => self[:unit],
+          :size => self[:size],
+          :cap => self[:cap]
+        }
+      end
     end
 
     class Parameters < FFI::Struct
       layout :format, :frame, :last_frame, :int, :bytes_per_line, :int, :pixels_per_line, :int, :lines, :int, :depth, :int
 
-      def to_hash; {format: self[:format], last_frame: self[:last_frame], bytes_per_line: self[:bytes_per_line], pixels_per_line: self[:pixels_per_line], lines: self[:lines], depth: self[:depth]} end
+      def to_hash
+        {
+          :format => self[:format],
+          :last_frame => self[:last_frame],
+          :bytes_per_line => self[:bytes_per_line],
+          :pixels_per_line => self[:pixels_per_line],
+          :lines => self[:lines],
+          :depth => self[:depth]
+        }
+      end
     end
 
     # extern SANE_Status sane_init (SANE_Int * version_code, SANE_Auth_Callback authorize);
diff --git a/lib/sane/device.rb b/lib/sane/device.rb
index 757f5fa..8e24acd 100644
--- a/lib/sane/device.rb
+++ b/lib/sane/device.rb
@@ -77,18 +77,20 @@ class Sane
         begin
           self[i]
         rescue Error
-          nil # we can't get values of some options, ignore them
+          nil # we can't read values of some options (i.e. buttons), ignore them
         end
       end
     end
 
     def options
-      {}.tap { |hash| option_count.times { |i| hash[option_names[i]] = option_values[i] } }
+      result = {}
+      option_count.times { |i| hash[option_names[i]] = option_values[i] }
+      result
     end
 
     def option_lookup(option_name)
       return option_name if (0..option_count).include?(option_name)
-      option_descriptors.index { |option| option[:name] == option_name.to_s } or raise ArgumentError, "Option not found: #{option_name}"
+      option_descriptors.index { |option| option[:name] == option_name.to_s } or raise(ArgumentError, "Option not found: #{option_name}")
     end
 
     def describe(option)
@@ -98,11 +100,11 @@ class Sane
     private
 
     def ensure_closed!
-      raise "Device is already open" if open?
+      raise("Device is already open") if open?
     end
 
     def ensure_open!
-      raise "Device is closed" if closed?
+      raise("Device is closed") if closed?
     end
   end
 end
diff --git a/sane-ffi.gemspec b/sane-ffi.gemspec
index ec8e638..680d613 100644
--- a/sane-ffi.gemspec
+++ b/sane-ffi.gemspec
@@ -12,8 +12,6 @@ Gem::Specification.new do |s|
   s.summary     = %q{SANE bindings}
   s.description = %q{Scanner Access now Easier}
 
-  # s.rubyforge_project = "sane"
-
   s.add_dependency "ffi"
 
   s.files         = `git ls-files`.split("\n")