add yui tests require field url support
insert url to appseed
fix bug of find liburls
Merge branch 'master' of github.com:yahoo/arrow into mock

Conflicts:
	lib/driver/selenium.js
add hasbeenloaded check
add lib name check
formart code
add lib loaded support
Merge branch 'master' of github.com:yahoo/arrow into mock
add hasbeenload(lib-load-priority check)unit test
add more assert
update comment
format code
format code
remove debug log
Merge pull request #111 from liangji101/mock

add libs has_been_loaded check & yui tests require field "url" support