Git commit version info

Clean Work Tree ![image](https://cloud.githubusercontent.com/assets/3629489/5236910/777a2a10-782a-11e4-8c5d-5444c8071d56.png)
Dirty Work Tree ![image](https://cloud.githubusercontent.com/assets/3629489/5236917/0c0ce492-782b-11e4-90dc-acdb2e586682.png)

This will aid in the issue submissions.  If NBug reports an issue we will know exactly which commit the exe was compiled against.