Minor changes.
Added documentation for the I2C package.
Added support for multiple command receivers in the HTTP client.

TODO: Make some cleanup of this code. It's quite old and dirty.
ADC: Added a sleep in the reading code (probably too big).
ADC: locking on the class and sleeping before reading

The TC65i's ADC is bogus. If we read the ADC at the same time (because we use two parrallel timers like I just did), we can have some mixed up values.