update README

README.md

@@ -2,15 +2,31 @@
 
 # AiiDA tutorials
 
-This repository contains a collection of texts used for
-various AiiDA tutorials.
+The official place to find materials from AiiDA tutorial events,
+interactive demos and videos.
 
-Visit http://aiidateam.github.io/aiida-tutorials
+Visit http://aiida-tutorials.readthedocs.org
 
-## Building locally
+## Contributing
+
+We highly welcome contributions of
+
+ * links to new tutorial materials
+ * corrections of existing tutorial materials
+
+If you would like to contribute a fix or a link to a new tutorial resource, please:
+
+ * Fork this repository
+ * Make your changes
+ * Submit a [pull request](https://github.com/aiidateam/aiida-tutorials/pulls)
+
+If you have a question, feel free to just [open an issue](https://github.com/aiidateam/aiida-tutorials/issues/new).
+
+## Building the web site locally
 
 ```
-cd docs
+git clone https://github.com/aiidateam/aiida-tutorials.git
+cd aiida-tutorials/docs
 pip install -r requirements.txt
 make
 # open build/html/index.html