Clarified instructions for contributing keymaps.

TODO

 -> Add automated testing scripts to verify behaviour and operation
 
+-> Add automated smoke test of keymaps (ensure they can be parsed, at least),
+   and provide and document facility in the code for people to validate
+   keymaps they create.
+
 -> Clean up imported docs in "./docs", remove redundant docs
 
 -> Add support for sending logs via mail

docs/Keymaps.md

@@ -18,8 +18,11 @@ You can easily create keymaps for your layout by taking one example
 and then modifying it with the help of a keyboard layout tool (e.g.,
 see the following [example layout tool from
 Microsoft](http://msdn.microsoft.com/en-us/goglobal/bb964651.aspx)).
-If you create a keymap, please upload it as a [new
-issue](https://github.com/kernc/logkeys/issues).
+If you create a keymap, please submit a Pull Request to the master
+branch of this repo (preferred), or upload it as a [new
+issue](https://github.com/kernc/logkeys/issues).  Please ensure the
+filename has name and locale, if appropriate (e.g., "de_CH.map" vs
+just "de.map").
 
 ## Format