Update README.md
Converting the test-clone test to test-harness.
Converting test-compositing-order to test-harness.
Converting test-document-timeline to test-harness.
Converting test-duration to test-harness.
Converting test-modify-timing-params to test-harness.
Converting to assert_approx_equal values which differ between Chrome stable/beta and unstable.
Merge branch 'test-media-fix' into test-conversion
Merge pull request #198 from mithro/test-media-fix

Converting to assert_approx_equal values which differ between Chrome stable/beta and unstable.
Merge remote-tracking branch 'up/master' into test-conversion
Reverting s/document.timeline/dt/ change.
Merge pull request #197 from mithro/test-conversion

5 more tests converted.
Converting test-parent-is-self to test-harness.
Converting test-player to test-harness.
Converting test-repeated-pause to test-harness.
Converting test-restart to test-harness.
Converting test-set-parent to test-harness.
Converting test-unpause to test-harness.
Generated checks for test-path.html
Adding checks for test-element-animate.