Merge pull request #2 from benraywu/master

fix a bug: when the value changes from 1-31(>29/28) to 2-31
fix issue of wrong text color when customising with UIAppearance
show correct date if date property is set before view is added
0.0.4
fix the number of minute row
0.0.5
fix issues on iOS7
podspec
fix bug: 12:45 AM -->00:45    12:45 PM -->12:45