add gemspec file
rename rakefile.rb to Rakefile
Buildar version:bump_patch to 0.2.1.0
Buildar version:bump_build to 0.2.1.1
slight reorder
Buildar version:bump_build to 0.2.1.2
Buildar version:bump_build to 0.2.1.3
Buildar version:bump_build to 0.2.1.4
tweaks for external gemspec file
Buildar version:bump_build to 0.2.1.5
Buildar version:bump_patch to 0.2.2.0
Buildar version:bump_build to 0.2.2.1