Use "osx" instead of "mac" since the website JS currently uses that

Add batch.py to process all subdirectories containing animations

Allow larger total screencast size

Use pngquant to further reduce filesize

Document code that drops alpha channel

Filter duplicate frames due to a bug in opencv

Handle PNGs with alpha

Convert to Python 3

Merge pull request #5 from bwright/master

Removed some of the irrelevant info from the readme

Fixed a minor issue with the styling of the code in the documentation

Improved the readme

Minor changes that provide a simple capture utility, a central place for configuration and a better readme

Merge pull request #4 from aarmea/master

Don't fail if pngcrush is not found