Chrome App support

[beriberikix]

I would love to be able to build and upload Arduino code from my Chromebook. I was trying to walk through the code to see how was hard it would be replace node-serialport with https://www.npmjs.org/package/browser-serialport. Have you considered adding support for ChromeOS/Chrome Packaged Apps?

[AdamMagaluk]

I think in general that is a great idea and would love to support it. I think I could easily abstract the console command to use browser-serialport. But you'd still have to run the binaries needed avr-gcc and avrdude to build and upload code.

[jacobrosenthal]

@soldair and I have pure js stk500 v1 and v2 bootloaders https://github.com/jacobrosenthal/js-stk500v1 https://github.com/pinoccio/js-stk500 which have been tested in browser