Test Harness for Shake Handler

Tested 3 methods:
1. Linear Acceleration threshold of 15000. Found it the best and
filtered out noise and sensitive to a shake
2. High Pass filter with threshold of 0.9, it had too much noise and not
very useful for a gentle shake - was triggered even at rest.
3. G-force threshold of 1.5 - works but you need to shake hard.
It can be used if you really need the user to shake really hard.
At 2 and 2.5 it requires too much shaking - not good for device