Accept the full set of "magic words" that close github issues.

List taken from:

https://github.com/blog/1386-closing-issues-via-commit-messages
close, closes, closed, fixes, fixed
Switch over to using "Closes" for all output.
Code cleanup: move the '.' to its point of use.
Remove all newlines preceding last line of "Closes" directives.
Remove echo
Convert to Grunt 0.4 for build
Fix package.json bug entry
Merge pull request #59 from nschonni/grunt-0.4

Grunt 0.4 conversion
Exit if error is returned when fetching a token
Add User-Agent to make Pulley work again
Close GH-60: Add missing dev dependency.
Add npmignore
0.2.4
Add user-agent for login API call

Required for new v3 Github API
Merge pull request #62 from nschonni/add-user-agent-login

Add user-agent for login API call
Merge pull request #61 from nschonni/add-authenticate-error-check

Exit if error is returned when fetching a token
0.2.5
Merge branch 'master' of github.com:arv/pulley
Merge branch 'master' of git://github.com/jeresig/pulley