add suport for 'nwdisable' and fix security origin

Fix #534
Read package.json correctly when it starts with '..'

Fix #627
[test] test case for strat app

  relate to #627
bump mac version to 0.5.0
Merge pull request #628 from owenc4a4/test

[test] test case for strat app
[README] Update for 0.5.0 RC2
[test]modify html5 test case
modify native mode test build moudle
[test] classify test case for automatic_tests and manual_tests
[test] Add test case for file dialog
Merge pull request #650 from owenc4a4/test

[Test] classify test case and test case for file dialog