NOJIRA Move "rails" script to Rails 4 directory
According to http://guides.rubyonrails.org/4_0_release_notes.html the app executables belong in "bin" instead of "script".
The command line wrapper falls back to "script/rails" if "bin/rails" is missing, but RubyMine isn't so ingenious.
Merge pull request #2507 from raydavis/raywip

NOJIRA Move "rails" script to Rails 4 directory