Added storyboard support and variables names to block declarations

[jonasman]

Added variable names to block declarations to help in code completion
Added InitWithCoder to support Storyboards

[kcharwood]

I brought over 23d7efb in #80, and updated the header as well.

I'll need to circle back on the storyboard.

[kcharwood]

Thanks for the pull request, but @TomSwift has this handled with #81 .

🍻

[jonasman]

Hi I added an extra fix that you might need to consider:
in the initWithCenter blalala i also called the common init. It must be also done.

[kcharwood]

@jonasman initWithCenter:... goes through [super init], which UIViewController forwards through initWithNibName:..., which has the call to commonSetup.

[jonasman]

Good then!