Update modal_pane.js

Updated to work in Bootstrap 3.0.0
Update modal_pane_test.js

Removing Backdrop animation for Bootstrap 3
Removing Backdrop animation for Bootstrap 3
Adhering to spacing standards..
Adhering to spacing standards..
Got fading to work.

Had to manually remove the backdrop, but the fade in is working by default.
Update modal_pane.js
Fixed modal fade out.
Re-adding Backdrop animation test
Re-adding Backdrop animation docs
Update modal_pane.js

Attempting to get tests to pass.
Removed dependence on bootstrap.js
Update README.md
Update modal_pane_test.js
Tests should look for button instead of a tags.
Adding clickRelButton
Adding clickRelButton
Adding clickRelButton
Adding clickRelButton
Passing tests.

Added rel="close" and rejecting when secondary button is clicked.