Merge pull request #1 from Jeavon/master

Add start node pickers for both content and media options additionally adds ability to clear selected url, content or media values
Only show 'clear' buttons when values exist
Cleanup Gruntfile
Move C# project to /src/
Enable NuGet package restore

...the old way :)
Build solution, include PropertyValueConverter in build output
Update Umbraco to v7.1.1

To fix conflicting references when installing on 7.1.1
Add contributors to package output
Bump to 0.9.2
Merge pull request #3 from imulus/feature/clear

Only show 'clear' buttons when values exist
Merge pull request #4 from Jeavon/master

Adding pointer for tree pickers
Adding -ms-clear pseudo selector to stop IE10+ from adding it's own field clear button as we have one already