Fixed access level of BoxEnterprise Entity
Added permission and sort order entities
Fixed serialization of recursive boolean in FolderManager.DeleteAsync
Groups API
Added Apache License
Updates to groups API
Sample WPF Oauth2 App
Merge branch 'groups_api' of https://github.com/alitaleg/box-windows-sdk-v2 into alitaleg-groups_api

Conflicts:
	Box.V2/Box.V2.csproj
Merge branch 'master' of https://github.com/ckapatch/box-windows-sdk-v2 into ckapatch-master
Updated fields to be consistent with current SDK
Merge branch 'oauth_example' of https://github.com/alitaleg/box-windows-sdk-v2 into alitaleg-oauth_example
Oauth Example Modifications
Merge branch 'oauth_example' of https://github.com/alitaleg/box-windows-sdk-v2 into alitaleg-oauth_example
Added HttpStatusCodes to the BoxException, Created BoxWebLink as a return type for items
Fixed FilesManager.CreateSharedLinkAsync, request was going through as POST instead of PUT
Add the BoxFilePreview Response type plus endpoint
BoxFilePreview code improvements
Added Query parameters to preview endpoint
Updates to Preview Endpoint
Updated naming of GetPreview to follow MS Conventions