Merge pull request #27 from guangmingyao/yao_dev

Yao dev
Added colors to the integrating factors, made small changes to some examples.
changed the date for wednesday class
Merge pull request #46 from KellyBlack/black_dev

Added colors to the itnegrating factors
changed the data for wednesday class
Merge pull request #28 from guangmingyao/yao_dev

Yao dev