Determine platforms to build based on buildPlatforms object.
Update build instructions to include how to build for specific platforms.
Update AUTHORS
Add exclusive 'all' option to platforms list.
Fix issue #146
Switch to build:<target(s)> syntax.

Gave the build task some logic to map target platforms onto nodewebkit config parameters before running the task list.
Update build instructions with the new syntax.
Wording tweak.
Merge pull request #149 from OnAzureWings/specify_release_build_platforms

Allow user to specify build targets
update code css style - add cmd alias for /m
Merge branch 'master' of github.com:mephux/komanda
format fixes