Implemented support for multiple bulbs, documentation work, tighten MAC address formatting rules.
Added sphinx documentation setup.
Use colorsys stdlib module instead of homebrew implementation.
Merge branch 'use-colorsys' into develop

Conflicts:
	pylifx/__init__.py
Merge branch 'master' of https://github.com/derkarnold/pylifx into develop
Fix to make `from pylifx import *` work.

Reported in https://github.com/derkarnold/pylifx/issues/1#issuecomment-36403362
Merge commit '27673fd' into develop
Merge branch 'master' into develop
Merge branch 'master' into develop
Refactoring interface code, bulb discovery
Added more methods to LifxBulb, improved discovery and docs
Merge branch 'master' into develop
Merge pull request #3 from micolous/multiple-bulbs

Add support for multiple bulbs, documentation work.