snapshot appropriate area of underlying view

When dynamic = NO, we still need to be sure to snapshot the appropriate
bounds of the underlying view so the blur matches what is directly
behind the blur view
Updated to 1.5.6
Merge pull request #50 from stuntdouble/master

snapshot appropriate area of underlying view
Merge branch 'master' of https://github.com/nicklockwood/FXBlurView
Updated to version 1.6
Update README.md
Merge pull request #59 from RuiAAPeres/patch-1

Update README.md
Fixed issue with animation completion block not firing.
Merge branch 'master' of https://github.com/nicklockwood/FXBlurView
Updated to version 1.6.1
Updated to version 1.6.2
Upgrade podspec to JSON format
Merge branch 'master' of https://github.com/nicklockwood/FXBlurView