Update README.md
Update README.md
Remove warning on ios8
Fixed (I think) crash on iOS 8
Merge branch 'master' of https://github.com/ik/2048
Remove old board before loading the new one.
Fix new game issue
This alleviates, but does not fix, the out of board issue.
Update M2Position.h
Update M2SettingsDetailViewController.m
Update M2GameManager.m
Update M2Grid.m
Merge pull request #1 from ik/master

合并主干