Merge pull request #5 from chadhietala/ignore-mixins

Remove mixins doc for now

Author: chadhietala

README.md

@@ -4,10 +4,9 @@ This adds more guard rails for Ember. Just because something "works" does not me
 
 - Not adhereing to Data Down Actions Up
 - Side-efffect programming
-- Usage of Mixins
-- Usage of Sub-Classes
-- Eager/Lazy injections
-- Warnings and deprecations are failing tests
+- Usage of observers
+- Usage of attrs.*
+- Computed properties without dependent keys
 
 # Why
 As we've scaled out to over hundreds developers and hundrends of lines of code it has become clear that more "development time" guidance is required. While the guides do a good job about getting started, it's good to have some friction to make sure the app code is aligned with how Ember works.