Bump ruby-build from 20150116 to 20150303 and default Ruby from 2.2.0…

… to 2.2.1.

templates/base/config/rubber/rubber-ruby.yml

@@ -12,12 +12,12 @@ packages: [autoconf, bison, build-essential, libssl-dev, libyaml-dev, libreadlin
 
 # REQUIRED: The version of ruby-build to use for building ruby.
 # It must be one of the versions from https://github.com/sstephenson/ruby-build/releases.
-ruby_build_version: 20150116
+ruby_build_version: 20150303
 
 # REQUIRED: Set to the version string for the ruby version you wish to use
 # Run "ruby-build --definitions" to see the list of possible options or look through the list of
 # recipes online at https://github.com/sstephenson/ruby-build/tree/master/share/ruby-build
-ruby_version: 2.2.0
+ruby_version: 2.2.1
 
 # REQUIRED: Installation path for ruby.
 ruby_path: "/usr/local/rubies/#{ruby_version}"