fix portable and 3.5 project references

MediaBrowser.Model/Entities/ScrollDirection.cs

@@ -0,0 +1,17 @@
+namespace MediaBrowser.Model.Entities
+{
+    /// <summary>
+    /// Enum ScrollDirection
+    /// </summary>
+    public enum ScrollDirection
+    {
+        /// <summary>
+        /// The horizontal
+        /// </summary>
+        Horizontal,
+        /// <summary>
+        /// The vertical
+        /// </summary>
+        Vertical
+    }
+}