Use window.performance.now if available, otherwise fallback to Date.now polyfill
Merge pull request #70 from tdreyno/performance_now

Use window.performance.now if available, otherwise fallback to Date.now polyfill
Revert "Merge pull request #70 from tdreyno/performance_now" - changes to master are only done when making a new release

This reverts commit d6571b01fc0aaf0832a62e01603d7ee3c0d7c9c8, reversing
changes made to c1c86f650453f878797a2e487da7f21d78017de5.
Merge branch 'dev'
Fix wrong url to minified library in README.md ._.
359->360
example 08_repeat: remove commented code