Update CONTRIBUTING
Remove bundler lock, Vagrant 1.7.1 is out.

Vagrant 1.7.0 was a bad build for Windows, and Vagrant 1.6.5 was causing
a gem dependency issue. 1.7.1 is out now, and tests fine.
Gemfile: vagrant-wrapper 2.0 is out with Windows support
Release v1.36.0
Bump metadata version to 1.36.0
Chef 11.10 compat

WindowsPackage was not introduced until Chef 11.12, meaning we can
delete it to make the Chef 11/12 windows_package hack work
Added Chef 11.10.4 to kitchen.yml
Switch kitchen-vagrant to afiune's branch

My minor patch has been merged, so let's reduce the number of branches
out there by one.
Release 1.36.1