[README] Add instructions for running the demos.

README.md

@@ -1,7 +1,7 @@
 Yui Examples
 ============
 
-A collection of code examples for [Yui](https://git.doublefourteen.io/lua/yui).
+A collection of code examples for [yui](https://git.doublefourteen.io/lua/yui).
 
 ## Contents
 
@@ -11,6 +11,20 @@ A collection of code examples for [Yui](https://git.doublefourteen.io/lua/yui).
 
 ...and the [initial selection](examples/init.lua) menu is a demo in itself :)
 
+## Running the examples
+
+1. Clone this repository.
+
+2. Download **yui** and its dependencies using [crush](https://git.doublefourteen.io/lua/crush):
+   ```sh
+   lua crush.lua
+   ```
+
+3. Start the demo menu with [LÖVE](https://love2d.org):
+   ```sh
+   love .
+   ```
+
 ## Acknowledgement
 
 Some examples use [PixelDroid Menu fonts](https://github.com/pixeldroid/fonts),