Merge pull request #3 from joeyzhang1989/master

comment change
Merge pull request #4 from joeyzhang1989/master

correct PlayingScene class
change of parameter
Merge pull request #5 from alexwolfwang/master

change of parameter
Integrated Diagrams and Designs

put Class Diagrams, Package Diagram and UI Designs into the git.
commit test
Revert "commit test"

This reverts commit 4141ecd1d4158bf615e96ef049efbf463834a8c9.
bug fix
New Progress Control Diagram

v0.2 are almost decided, v0.3 and 0.4 are still planing
Progress Control Diagram for Retina
Change array to list
Merge remote-tracking branch 'upstream/master'