Update Changelog, contributors list and doc

doc/plugin-registration.markdown

@@ -1,6 +1,28 @@
 Plugin Registration
 ===================
 
+Project skeleton generator
+--------------------------
+
+You can use `cookiecutter` to create the project structure of your plugin automatically.
+
+Install Cookiecutter:
+
+```bash
+pip install -U cookiecutter
+```
+
+Run Kanboard cookiecutter:
+
+```bash
+cookiecutter gh:kanboard/cookiecutter-plugin
+plugin_name [My Plugin]: Some Plugin
+plugin_namespace [MyPlugin]: SomePlugin
+plugin_author [Plugin Author]: Me
+plugin_description [My plugin is awesome]:
+plugin_homepage [https://github.com/kanboard/plugin-myplugin]:
+```
+
 Directory structure
 -------------------