better YUI version compare, specifically to support yui@3.10.0
fix relative path error
add callback after start proxy
format code
Merge branch 'master' of github.com:yahoo/arrow into develop

Conflicts:
	lib/driver/selenium.js
	lib/session/sessionfactory.js
	lib/session/testexecutor.js
Merge pull request #81 from drewfish/vercmp

better YUI version compare, specifically to support yui@3.10.0
Merge pull request #84 from pranavparikh/master

Using a common object for showing time reports
separating lib and cli.
removing unused proxymanager variable from index.js
Merge branch 'master' of github.com:yahoo/arrow into develop
make yui sandbox default to false
Merge pull request #85 from liangji101/develop

make yui sandbox default to false
Changes for not cleaning up the reportFolder