alias_command "repo:purge-cache", "repo:purge_cache"
Update README.md
document purge-cache as that, instead of purge_cache
Explicitly declare the removal of the .heroku folder
Cleaned up rm commands
Changed .heroku to "shopt -s dotglob"
Explicitly remove & recreate the .cache directory
introducing repo:clone
Merge pull request #1 from heroku/master

Pull in JD Changes
Merge pull request #1 from rhyselsmore/master

purge_cache improvements
Added repo:clone and fixed spelling issues.
don't remeove vendor/heroku (metadata) when purging cache
Update README.md
Merge pull request #2 from heroku/save_metadata

don't remeove vendor/heroku (metadata) when purging cache
Merge branch 'delete-cache-object'
Merge branch 'fix-typo'
Merge remote-tracking branch 'lstoll/master'