Using first repo value to get gh creds
Using first repo value to get gh creds

Before, a repo was hard-coded. Should be fine to get only the first
repo and use its github credentials.

numenta/nupic.tools,brev/nupic.tools,rhyolight/nupic.tools,brev/nupic.tools,rhyolight/nupic.tools,numenta/nupic.tools