Add 'Touch to Run` tutorial (#420)

* Add 'Touch to Run` tutorial

* Edits and thumbnail image

docs/tutorials.md

@@ -36,5 +36,11 @@ Step by step guide to coding your @boardname@.
   "cardType": "tutorial",
   "url":"/tutorials/run-motors",
   "imageUrl":"/static/tutorials/run-motors.png"
+}, {
+  "name": "Touch to Run",
+  "description": "Press the Touch sensor and run a motor.",
+  "cardType": "tutorial",
+  "url":"/tutorials/touch-to-run",
+  "imageUrl":"/static/tutorials/touch-to-run.png"
 }]
 ```

docs/tutorials/touch-to-run.md

@@ -0,0 +1,65 @@
+# Touch to Run
+
+## Introduction @fullscreen
+
+Use the Touch sensor to run a motor.
+
+![Large motor connected to brick](/static/tutorials/touch-to-run/touch-to-run.gif)
+
+## Step 1
+
+Open the ``||sensors:Sensors||`` Toolbox drawer. Drag out **2** ``||sensors:on touch||`` blocks onto the Workspace (you can place these anywhere).
+
+```block
+sensors.touch1.onEvent(ButtonEvent.Pressed, function () {
+
+})
+sensors.touch1.onEvent(ButtonEvent.Pressed, function () {
+
+})
+```
+
+## Step 2
+
+In one of the ``||sensors:on touch||`` blocks, use the second drop-down menu to change from ``pressed`` to ``released``.
+ 
+![Touch sensor action dropdown](/static/tutorials/touch-to-run/on-touch-dropdown.png)
+
+```block
+sensors.touch1.onEvent(ButtonEvent.Pressed, function () {
+
+})
+sensors.touch1.onEvent(ButtonEvent.Released, function () {
+
+})
+```
+
+## Step 3
+
+Open the ``||motors:Motors||`` Toolbox drawer. Drag out a ``||motors:run||`` block onto the Workspace, and drop it into the ``||brick:on touch pressed||`` block.
+
+```block
+sensors.touch1.onEvent(ButtonEvent.Pressed, function () {
+    motors.largeA.run(50)
+})
+sensors.touch1.onEvent(ButtonEvent.Released, function () {
+
+})
+```
+
+## Step 4
+
+Open the ``||motors:Motors||`` Toolbox drawer. Drag out a ``||motors:stop||`` block onto the Workspace, and drop it into the ``||sensors:on touch released||`` block.
+
+```block
+sensors.touch1.onEvent(ButtonEvent.Pressed, function () {
+    motors.largeA.run(50)
+})
+sensors.touch1.onEvent(ButtonEvent.Released, function () {
+    motors.largeA.stop()
+})
+```
+
+## Step 5
+
+Now, let’s download our program to the brick. Plug your EV3 brick into the computer with the USB cable, and click the blue **Download** button in the bottom left of your screen.  Follow the directions to save your program to the brick. Attach a Large motor to Port A, and a Touch sensor to Port 1 on your brick. Test your program by pressing and releasing the touch sensor – does the motor start and stop as expected?