git_create_pr

Not responding to scenario where github requires login credentials
Along with that, saw this issue,
```
./scripts/git_create_pr
git version 1.8.5.3
hub version 1.11.1
Warning: Issue to pull request conversion is deprecated and might not work in the future.
Error creating pull request: Not Found (HTTP 404)
Are you sure that github.com///github.com/bigbinary exists?```