Merge pull request #21 from szTheory/patch-1

README syntax highlighting markdown

Author: vans163

README.md

@@ -13,7 +13,9 @@ Use
 
 Add the plugin only to your user local rebar config in `~/.config/rebar3/rebar.config`:
 
-    {plugins, [rebar3_auto]}.
+```erlang
+{plugins, [rebar3_auto]}.
+```
 
 If you add it to your project rebar.config, it will get unloaded each time compilation occurs, thus breaking it.