bumping version in prep for upcoming 3.5.0
CB-6341 don't rely on msbuild being in the path.
CB-6450 added support for local XHR.responseXML getter
CB-6412 Include release notes in repo.
CB-6491 add CONTRIBUTING.md
CB-6558: added package.json files for wp7 & wp8
Apply app-hello-world update
Update releasenotes, and state that WP7 support is about to disappear
[WP7] Goodbye, it has been fun. ;)
Remove WP7 from readme, and tooling