Move aws key id settings into boto config file.

Goto code.google.com/p/boto/wiki/BotoConfig for more information
Merge pull request #1918 from libm/master

Move aws key id settings into boto config file.
Support for 'single-instance' when app is started in folder

Fix #515
Flush stdout to inform buildbot that it is not hang.

Added retry and let 'node-webkit-' bundle to be uploaded first.
Merge pull request #1944 from libm/master

Flush stdout to inform buildbot that it is not hang.
Add app single instance test case
Merge branch 'master' of https://github.com/rogerwang/node-webkit
Merge branch 'single-instance-test-case'