SBT typo fix

When SBT boots, it shows the version number. This PR fixes a typo in this instance.

- [fix] VERION -> VERSION
- [fix] Comment banners are 80 chars long

![ ](http://s2.developerslife.ru/public/images/gifs/9ad55378-9ee5-427c-bc9a-6d696636ef9a.gif)