Allow user_data in configuration
implement :disabled override flag
Bump version for development
* Merge from upstream 'vagrant-aws' v0.2.2

  - Ability to specify a timeout for waiting for server to build.
  - Add support for `vagrant ssh -c`
  - Better error messages if server doesn't build in time.
  - Implement `:disabled` flag support for shared folders.
  - `brightbox.user_data` to specify user data on the server.