Create release notes script to grab changes (#545)
Create release notes script to grab changes (#545)

* Create release notes script to grab changes

First iteration on the idea of automatically generating release notes
emails that we may or may not want to send out.

Example usage:

```
./scripts/release_notes.sh ansible-service-broker-1.0.5-1
```

* Improve release notes readability

* Fix pull request URL

eriknelson/ansible-service-broker,rthallisey/ansible-service-broker,eriknelson/ansible-service-broker,johnkim76/ansible-service-broker,rthallisey/ansible-service-broker,rthallisey/ansible-service-broker,eriknelson/ansible-service-broker,johnkim76/ansible-service-broker,johnkim76/ansible-service-broker