Update README.md

Add NuGet note to developers

README.md

@@ -13,4 +13,8 @@ This project is open source, freely available, and free of royalties
 or encumberance. The software is released under the highly permissive
 MIT License.
 
+NuGet
+-----
+If your samples use the NuGet packages make sure they are cleaned of all references of the package before committing.
 
+This will keep our repo clean and smaller for other developers.