iOS 5 EventView label issue fixed

On iOS 5 the TKCalendarDayEventView's titleLabel and locationLabel text is going out of the event view if the string is too long.
Without sizeToFit everything is fine ion iOS 5

![ios5issue](https://f.cloud.github.com/assets/2952613/604474/4fee5e20-ccf6-11e2-8656-607b01a3848c.png)