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
[test]fix test case file dialog
bump version to 0.5.0
[test] fix manual test case
[README] update for 0.5.0
update README.md
[win] fix that setAlwaysOnTop doesn't work when application isn't focused

  fix #655
[test] test case for #655
Merge pull request #657 from owenc4a4/i655

[win] fix that setAlwaysOnTop doesn't work when application isn't focuse...
Merge pull request #658 from owenc4a4/test

[Test] fix bug of some test, add test case for #655
catch error of socket
[test] fix test case start_app
Merge pull request #660 from owenc4a4/test

catch error of socket
bump version to 0.5.1-pre
Remember default isolate for ProxyResolverV8

Fix #663
bump version to 0.5.1
[README] update for 0.5.1