Added test group pages

docs/group_assignments/group2/assignment0.md

+---
+title: Test assignment
+summary: A brief description of my document.
+authors:
+    - Iván Sánchez Milara
+---
+
+# 1 Heading 1st level. Not title. 
+
+## 2nd level heading
+[University of Oulu](http://www.oulu.fi)
+
+![Testing and image](assets/assignment0/fablab_electronics.jpg)
+
+## Another 2nd level heading
+
+This is a body for test2. Here continues the test.
+
+### Third heading
+
+# 2 Heading 1st level.