Version bump to 0.3.0.
Version bump to 0.3.0.

ilikepi/chruby,ngpestelos/chruby,regularfry/chruby,kbrock/chruby,ilikepi/chruby,JeanMertz/chruby-fish,rstacruz/chruby-fish,eunomie/chgo,postmodern/chruby,rstacruz/chruby-fish,eunomie/chgo,postmodern/chruby,JeanMertz/chruby-fish,ngpestelos/chruby,regularfry/chruby,kbrock/chruby