Tweaking benchmarks a bit -- adding benchmarks for aggregate sample rendering time and total speed test time, displaying summary reports at the end (after individual sample reports).

Enyo-DCO-1.1-Signed-Off-By: Gray Norton (gray.norton@lge.com)
Replacing console.log() with enyo.log() throughout.

Enyo-DCO-1.1-Signed-Off-By: Gray Norton <gray.norton@lge.com>
Merge pull request #36 from enyojs/add-speed-test

Tweaking benchmarks a bit -- adding benchmarks for aggregate sample rend...

Reviewed-By: Ben Combee (ben.combee@lge.com)