Fix Notes

Notes now works with embedded code sections, but the spacing is still
wrong as is the language selection. Oh well, come back to it later...

docs/index.md

@@ -15,13 +15,15 @@ The latest release is **v0.7.0 beta 2** released on 9th October 2015.
 With very little code, you can quickly get going connecting your physical
 components together:
 
-    from gpiozero import LED, Button
+```python
+from gpiozero import LED, Button
 
-    led = LED(2)
-    button = Button(3)
+led = LED(2)
+button = Button(3)
 
-    button.when_pressed = led.on
-    button.when_released = led.off
+button.when_pressed = led.on
+button.when_released = led.off
+```
 
 The library includes interfaces to many simple everyday components, as well as
 some more complex things like sensors, analogue-to-digital converters, full

docs/notes.md

@@ -45,13 +45,10 @@
 
     The following program looks like it should turn an LED on:
 
-   ```python
         from gpiozero import led
 
         led = LED(2)
-
         led.on()
-   ```
 
     And it does, if you're using the Python shell, IPython shell or IDLE shell,
     but if you saved this program as a Python file and ran it, it would flash
@@ -60,16 +57,12 @@
     The following file includes an intentional `pause` to keep the program
     alive:
 
-   ```python
         from gpiozero import LED
         from signal import pause
 
         led = LED(2)
-
         led.on()
-
         pause()
-   ```
 
     Now running the program will stay running, leaving the LED on, until it is
     forced to quit.
@@ -77,13 +70,9 @@
     Similarly, when setting up callbacks on button presses or other input
     devices, the program needs to be running for the events to be detected:
 
-   ```python
         from gpiozero import Button
         from signal import pause
 
         button = Button(2)
-
         button.when_pressed = lambda: print("Button was pressed!")
-
         pause()
-   ```