Added a crude prototype of chruby-exec (issue #24).
Added a crude prototype of chruby-exec (issue #24).

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