Sig handler on shutdown so we can see console

Changed the motor icons to simply Left/Right. Made more sense than Play/Reverse

iFixed bug on pressing start repeatedly, needed to press stop after successful completein of lapse

Update user_guide.rst

added user guide§

Update index.rst

Update index.rst

Monor Document Fixes

Merge pull request #2 from jmcnamara/docs

Initial docs structure.

Update README.md

Added info on pulling repo and running

Update README.md

First committed version of Lapse Pi.

removed a couple of unused icons