Improved many parts of PiGlow-Ambient
- Fixed init script to correctly work with pidfile and SIGNALS
- Added reload signals to init script and program (does not handle it)
- Moved some code to common.go for better structure
- Moved some initialization function to stubs
- Added `test` and `cfgfile` flags to program
- Added config file reading
-- Longitude
-- Latitude
-- Transition speed
-- PingIp (does not work yet)
- Fixed "bug" in coordinates (non standard coords used in library)
- Added isRunning variable to correctly shutdown the program