Create README.md

README.md

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+# graph_browser
+Graph broswing and editing in text mode with ncurses
+
+
+Using 3 windows:
+ 1. The current node's neighbours, move up/down to inspect, 
+    back/forward to move back in history/set the selected node as the current.
+ 2. Vertically listed neighbours of the selected node.
+ 3. Neighbours of neighbours of the selected node, comma separated list.
+ 
+Todo:
+ * insert/delete node
+ * add/remove edge
+