Removing Github creds from config files.

Now required through environment variables.
Also did some cleanup.
Adding dummy Github creds to travis for tests.
Merge pull request #89 from rhyolight/remove-credentials-from-config

Removing Github creds from config files.
Moving dev dependencies in the right place.
Fixed errors with validation.

I don't know how this was ever working properly. :/
Merge pull request #90 from rhyolight/clean-package

Moving dev dependencies in the right place.
Merge branch 'master' of github.com:numenta/nupic.tools into post-validation-fix
Merge pull request #91 from rhyolight/post-validation-fix

Fixed errors with validation.
Removing remote branch before creating new PR.
Merge pull request #93 from rhyolight/sha-update-pr-fix

Deleting old PR remote branch before re-creating.
Merge pull request #87 from utensil/85-provide-non-mergeable-status

Provide status for non-mergeable PRs