Moved NSString declarations into viewDidLoad

[iheart2code]

For whatever reason, the initWithStyle method wasn't be called for me. This meant that the labels weren't being assigned any values. I'm assuming this happened because I'm using a NIB file.

I moved the NSString declarations into the viewDidLoad method, before the addPullToRefreshHeader method call and everything is working as expected.

Thanks for making this available!

[iheart2code]

aaronpk's commit fixes this as well