README fixes

 * Wrap to 80 lines.
 * QUnit is no longer submodule.
 * Added details on running tests.
Merge pull request #40 from kartikm/README-fixes

README fixes
Reset webfonts where inline css style is found upon reset()

 1. Reset webfonts where inline css style is found while calling
 webfonts.reset() call.
 2. Added tests.
Merge pull request #39 from kartikm/ResetWebFonts

Reset webfonts where we found inline css style upon reset