Log file now also contains warnings
Style fixes in home-assistant-api.html
Calling a service can now block till execution is done
Fix Chromecast tests
Added TrackStates context manager
API Call Service returns states changed
Upgrade to Polymer 0.5.2
Define number of worker threads based on cpu count
Fix PyLint
Make block_till_stopped test more flexible
Merge remote-tracking branch 'origin/master' into dev
WeMo component exposes Insight info if available
New strategy for defining number of used threads

Number of worker threads is 2 + 1 for each component that polls devices.
Frontend: color switch icons yellow if on
Make nmap mac regex more flexible to play nice with OS X
Moved documentation from GitHub source to home-assistant.io
Add code to mock API for demo on home-assistant.io
Add link to demo in README
Update documentation for example component