Added a release task check to ensure the branch is master.
feat(grunt): adds a release task check to ensure the branch is master

If you run the release grunt task while not in the master branch,
the repo will get trashed. After personally experiencing this,
I created this check to prevent this from happening in the future.
Merge branch 'master' of github.com:gvsboy/inject
fix(grunt): use native trim

I overlooked native trim when amending the release grunt task. Since it's
available we may as well use it.
Merge pull request #295 from gvsboy/master

feat(grunt): adds a release task check to ensure the branch is master

If you run the release grunt task while not in the master branch,
the repo will get trashed. After personally experiencing this,
I created this check to prevent this from happening in the future.