adapt to bundler changes, add ruby 2.0 to tests, prep release

.travis.yml

@@ -2,6 +2,7 @@ rvm:
   - 1.8.7
   - 1.9.2
   - 1.9.3
+  - 2.0.0
   - jruby-18mode
   - jruby-19mode
   
@@ -16,3 +17,4 @@ matrix:
   allow_failures:
     - rvm: jruby-18mode
     - rvm: jruby-19mode
+    - rvm: 2.0.0

middleman-core/lib/middleman-core/templates/extension/Gemfile

@@ -1,4 +1,6 @@
-source :rubygems
+# If you have OpenSSL installed, we recommend updating
+# the following line to use "https"
+source 'http://rubygems.org'
 
 # Specify your gem's dependencies in <%= name %>.gemspec
 gemspec

middleman-core/lib/middleman-core/templates/shared/Gemfile.tt

@@ -1,3 +1,5 @@
-source :rubygems
+# If you have OpenSSL installed, we recommend updating
+# the following line to use "https"
+source 'http://rubygems.org'
 
 gem "middleman", "~><%= Middleman::VERSION %>"

middleman-core/lib/middleman-core/version.rb

@@ -1,5 +1,5 @@
 module Middleman
   # Current Version
   # @return [String]
-  VERSION = '3.0.12.pre.1' unless const_defined?(:VERSION)
+  VERSION = '3.0.12' unless const_defined?(:VERSION)
 end