doc(testing): does not yet have 100% coverage (#274)

Author: redgeoff

Diff for: TESTING.md

@@ -1,11 +1,5 @@
 # Testing
 
-## 100% Coverage
-
-This project implements 100% test coverage as it allows us to:
-  1. Use tools like [greenkeeper](https://greenkeeper.io/)
-  2. Refactor/optimize without breaking anything
-
 ## Testing
 
 Lint and run tests (including with code coverage):
@@ -26,4 +20,4 @@ Then visit `http://localhost:3000` in a browser.
 
 ## Analyzing the Bundle
 
-    $ yarn analyze-bundle # Don't run in VM
+    $ yarn analyze-bundle # Don't run in VM