enable DevTools process with Node

It should have powerful permissions to access local files
via XHR (e.g. source map). Fix #727 and #95 again.
Merge pull request #752 from owenc4a4/test

[test]test case for source maps & modify json reporter
Fix dom_storage_quota
[API] App.dataPath support
Setting context data for debugger in Node context

This helps to show Node scripts in Devtools
send App.open and App.quit event to all windows

Fix #787
rename 'nw_package_bin' to 'dist'
bump version to 0.6.1
send App.quit correctly when the last window closed
[README] update for 0.6.1
bump version to 0.6.2-pre
[README] fix link for release notes
[test] add description for file dialog
add self to AUTHORS