Added rename app functionality
output should be a little more clear & concise
gofmt, made definitions a little more consistent
update readme to reflect new command
Added heroku releases support
- Will show a list of releases for an app
- Allows the user to get information on a single release
updated readme to reflect new rels command
added comments
Clearer and more concise long description for rels
moved commands to be more consistent with rest of app