Update contributing guide to fit new organization

Rafal Chmiel · Rafal Chmiel · commit e4b415249a35 · 2014-04-14T19:51:06.000+01:00
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
@@ -8,8 +8,8 @@
 
 ## Styling
 
-- Use `##` headers for your sections.
-- Also use `##` for categories (these should group together relevant sections) and `###` for subcategories.
+- Use `###` headers for your sections.
+- Also use `###` for categories (these should group together relevant sections) and `####` for subcategories.
 - Add a link to your section/category to the contents section (use relative links).
 - Make sure to include examples wherever possible (preferably GIFs).
 - For command-line examples, wrap your commands in a `bash` code block. Ask [@rafalchmiel](https://github.com/rafalchmiel) or [@tiimgreen](https://github.com/tiimgreen) to take a screenshot (so that it is consistent with the rest) of the output if it has color, etc.
