Add initial overrides to Scala Style Guide

Yes, I am a little opinionated on some things. Still pending issues
includes:
* Defining recommended file and package/type/function organization.
* Provide recommendations on definition implicits that are used as
  typeclass "instances".
Add Linting section & SBT project example (Scala)
Merge pull request #7 from mbbx6spp/add-scala-README

Add initial overrides to Scala Style Guide