Added LICENCE (the pure GPL text copied verbatim from gnu.org) and README.

Started to add a NetworkX plot in plots.py

README

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+Fluents Data Analysis Software
+
+LICENSE
+-------
+Fluents is relased under the terms of the GNU GPL, included in the LICENSE file
+in this directory.
+
+DOCUMENTATION
+-------------
+The primary and canonical source of documentation is the source code. If a
+keyboard shortcut is listed on the wiki but it does not work in the program,
+the program is right, and the wiki is wrong.
+
+That said, the next best place to look for documentation is the project wiki,
+located at https://dev.pvv.ntnu.no/projects/fluent/help
+
+BUILDING
+--------
+Fluents is a python program, and as such, python will build compiled versions
+of each .py file as it loads them. You do not need to explicitly compile the
+program.
+
+TODO
+----
+The current TODO list can be found on
+https://dev.pvv.ntnu.no/projects/fluent/report/1 
+