Added some controls info

README.md

@@ -1,11 +1,16 @@
 # WikiMap
-An intelligent tool for mind mapping ideas using Wikipedia data
+An intelligent tool for mind mapping ideas using Wikipedia data. A clean design with a simple interface to map out your ideas complete with useful hints for new ideas.
+
+## Controls
+
+- **Left click**            Select nodes / pan the screen
+- **Right click + Drag**    Box select
+- **X**                     Delete the current selection (leaf nodes only)
+- **Space**                 Add an empty child from selection to mouse position
+
+Node suggestions in the edit box can also be double-clicked to add them to the currently selected node.
 
-### Development
 
-#### TODO
 
-Suggestions:
-- ...