inital config setup for x86
specify mode for windows
Merge branch 'appveyor_setup' of https://github.com/deepak1556/atom-shell into deepak1556-appveyor_setup

Conflicts:
	script/lib/util.py
No need of project_id in appveyor.yml.
Build only Debug version.
Upgrade to apm@0.89.0
Add lint scripts.
Make node version switching faster.
win: Download ATL binaries.
win: Build with downloaded ATL instead of the ATL shipped by WDK.
win: Use absolute path for ATL.
win: Fix calling lint scripts with win32 python.
Fix pylint warning.
win: Don't call pylint in CI.
Don't run tests.
Merge pull request #565 from atom/deepak1556-appveyor_setup

Appveyor setup