Write a contributing guide. (#1827)

docs/documentation_templates.md

@@ -0,0 +1,42 @@
+# Documentation Templates
+
+This page documents the templates you should use when submitting new Keymaps and Keyboards to QMK.
+
+## Keymap `readme.md` Template
+
+Most keymaps have an image depicting the layout. You can use [Keyboard Layout Editor](http://keyboard-layout-editor.com) to create an image. Upload it to [Imgur](http://imgur.com) or another hosting service, please do not include images in your Pull Request.
+
+Below the image you should write a short description to help people understand your keymap.
+
+```
+![Clueboard Layout Image](http://i.imgur.com/7Capi8W.png)
+
+# Default Clueboard Layout
+
+This is the default layout that comes flashed on every Clueboard. For the most
+part it's a straightforward and easy to follow layout. The only unusual key is
+the key in the upper left, which sends Escape normally, but Grave when any of
+the Ctrl, Alt, or GUI modifiers are held down.
+```
+
+## Keyboard `readme.md` Template
+
+```
+# Planck
+
+![Planck](http://i.imgur.com/q2M3uEU.jpg)
+
+A compact 40% (12x4) ortholinear keyboard kit made and sold by OLKB and Massdrop. [More info on qmk.fm](http://qmk.fm/planck/)
+
+Keyboard Maintainer: [Jack Humbert](https://github.com/jackhumbert)  
+Hardware Supported: Planck PCB rev1, rev2, rev3, rev4, Teensy 2.0  
+Hardware Availability: [OLKB.com](https://olkb.com), [Massdrop](https://www.massdrop.com/buy/planck-mechanical-keyboard?mode=guest_open)
+
+Make example for this keyboard (after setting up your build environment):
+
+    make planck-rev4-default
+
+See [build environment setup](https://docs.qmk.fm/build_environment_setup.html) then the [make instructions](https://docs.qmk.fm/make_instructions.html) for more information.
+```
+
+There needs to be two spaces at the end of the `Keyboard Maintainer` and `Hardware Supported` lines for it to render correctly with Markdown.