Update README.md
only show overlay on visible elements
Merge pull request #43 from yeaha/patch-2

Only show overlay on visible elements
Compile with new additions from recent PRs.
Adding bower.json
Adding newline at the end of bower.json
Add a Bitdeli badge to README
Merge pull request #57 from bitdeli-chef/master

Add a Bitdeli Badge to README
Merge pull request #50 from jameshalsall/master

Adding bower.json
Merge pull request #1 from heelhook/master

Update