Ported to Leiningen 2 and upgraded to ANTLR 3.4
Add :eval-in-leiningen for development
Add .lein-failures to .gitignore
Move docstring from ns to function for better formatting with 'lein help'
Wrap call to add-hook in activate function for backwards compatibility with :hooks
Update readme: new instructions for lein 2, and remove documentation for old option