feat: support Grunt glob patterns in `files`

Closes #61
chore: update contributors
Release v0.0.14
fix: revert git commit file matching

Git commit already does some basic file matching so grunt.file.expand
is not needed. Plus it breaks when passing in -a

Fixes #68
Closes #69
docs: add contributing link
chore: Bump semver to 2.3.0

Adjusted readme to follow new prerelease method.

Closes #36
Closes #49
Closes #44

BREAKING CHANGE: `bump:build` has been replaced with `bump:prerelease`
chore: typo in output