Add run-big-benchmarks.py script
Merge branch 'perfWeek' into addRunBigBenchmarksScript
No need to be forceful
Merge pull request #48 from alancutter/addRunBigBenchmarksScript

Add run-big-benchmarks.py script
Read from specified property if timing property not available.
Merge pull request #50 from elau8465/supportSpecified

Read from specified property if timing property not available.
Add web-animation-chaining
Merge pull request #51 from rjwright/WebAnimationsBigBenches

Add basic web animations benchmark animating opacity
Merge pull request #52 from dstockwell/wa-chaining

Add web-animation-chaining
Add benchmark for element.animate staggered with start delays