Style Updates

Here are a bunch of updates to our style guides:

* Description is more unique to Intrepid not thoughtbot
* Add linter suggestions and config files
* Hex color code style changes
* Uppercase color letters
* Discontinue using `_factory` variables
* Discontinue avoiding bang methods
Agreed on ignoring schema.db. As I think about this again, what about keeping the migrations though? Since they are (almost always) developer written, they should have the same standards as the code, no?