Add play command to context menu

When only one command is selected, an option will pop up to "Play from
Selected Command"

Assets/Fungus/Flowchart/Editor/BlockEditor.cs

@@ -790,14 +790,21 @@ namespace Fungus
 			bool showCopy = false;
 			bool showDelete = false;
 			bool showPaste = false;
+            bool showPlay = false;
 
 			if (flowchart.selectedCommands.Count > 0)
 			{
 				showCut = true;
 				showCopy = true;
 				showDelete = true;
+                if (flowchart.selectedCommands.Count == 1)
+                {
+                    showPlay = true;
+                }
             } 
             
+            
+			
 			CommandCopyBuffer commandCopyBuffer = CommandCopyBuffer.GetInstance();
 			
 			if (commandCopyBuffer.HasCommands())
@@ -843,6 +850,15 @@ namespace Fungus
 				commandMenu.AddDisabledItem(new GUIContent ("Delete"));
 			}
 
+            if (showPlay)
+            {
+                commandMenu.AddItem(new GUIContent("Play from Selected Command"), false, PlayCommand);
+            }
+            else
+            {
+                commandMenu.AddDisabledItem(new GUIContent("Play from Selected Command"));
+            }
+
 			commandMenu.AddSeparator("");
 			
 			commandMenu.AddItem (new GUIContent ("Select All"), false, SelectAll);
@@ -1029,6 +1045,14 @@ namespace Fungus
 			Repaint();
 		}
 		
+		protected void PlayCommand()
+        {
+            Block block = target as Block;
+            Flowchart flowchart = block.GetFlowchart();
+            Command command = flowchart.selectedCommands[0];
+            //block.Execute(null, command.commandIndex);
+        }
+
         protected void SelectPrevious()
 		{
 			Block block = target as Block;