Rename 12 to 14 and 11 to 13

part14/README.md

@@ -0,0 +1,27 @@
+Part 12
+=======
+
+## Installation
+
+```bash
+elm-package install
+```
+
+(Answer `y` when prompted.)
+
+
+## Building
+
+```bash
+elm-live Main.elm --open --pushstate --output=elm.js
+```
+
+## Compiling CSS
+
+```bash
+elm-css Stylesheets.elm
+```
+
+## References
+
+* [Elm CSS documentation](http://package.elm-lang.org/packages/rtfeldman/elm-css/latest)