Adding shimmer animation direction to FBShimmering protocol. FBShimmerDirectionRight (the original animation direction) is set as default. Shimmer direction may be changed at anytime.
Merge pull request #19 from laud/master

Adding shimmer animation direction to FBShimmering protocol.
Remove previous hack
Merge branch 'master' of github.com:facebook/Shimmer into update-library
Merge pull request #2 from moneytree/update-library

Update library