package binrary for all
keep only one renderer running; Fix #290
Quit browser with the exit code where renderer quits

Fix #283
[API] Fix "unknown method" error of Shell
Disable pinning process for dev reload

Fix #294. And previous process pinning commit a6493b3 breaks dev reload
rename pending_devreload to pinning_renderer
Force starting devtools window in new renderer process
provide webkit version and OS info for user agent
Merge pull request #291 from owenc4a4/pack

package binrary for all
bump version to 0.3.7
Add 'chromium-args', which can be used to specify chromium
command line args in package.json, fix #307.