Fixes for Xcode 6.1 Beta 2

These fixes allow PHUD to run in Xcode 6.1 Beta 2.

Unfortunately I still get a warning:

    2014-09-16 14:29:47.912 PKHUD Demo[50313:10503170] <PKHUD.FrameView 0x7fa053e609d0> is being asked to animate its opacity. This will cause the effect to appear broken until opacity returns to 1." 

I'm still looking into this warning.