Add hint for Shift+LMB shortcut

src/main/scala/ocelot/desktop/node/Node.scala

@@ -29,7 +29,7 @@ trait Node extends Widget with DragHandler with ClickHandler with HoverHandler {
   protected val canOpen = false
   protected val exposeAddress = true
 
-  private var isMoving = false
+  protected var isMoving = false
   private var grabPoint: Vector2D = Vector2D(0, 0)
 
   protected val _connections: ArrayBuffer[(NodePort, Node, NodePort)] = ArrayBuffer[(NodePort, Node, NodePort)]()

src/main/scala/ocelot/desktop/node/nodes/ComputerNode.scala

@@ -195,6 +195,8 @@ class ComputerNode(val computer: Case, setup: Boolean = true) extends Node {
     super.update()
     if (!isRunning && soundComputerRunning.isPlaying)
       soundComputerRunning.stop()
+    if (isHovered || isMoving)
+      root.get.statusBar.addKeyMouseEntry("icons/LMB", "SHIFT", if (isRunning) "Turn Off" else "Turn On")
   }
 
   private var currentWindow: ComputerWindow = _