ROScopter hardware setup/tuning guide

[JMoore5353]

When setting up ROScopter in hardware, in general you should check estimator output, tune the controllers, and carefully watch inputs/outputs.

We should create a "test flight prep/procedure" page that documents

1. What we do when setting up a new airframe (checking all control loops from ground up)
2. What are typical things that need to be checked preflight (every time) and how we conduct flight tests