made software dir, added pynfs

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+==================
+Matlab
+==================
+
+.. warning::
+    Stub, just getting started
+
+`cyclismo.org <http://www.cyclismo.org/tutorial/matlab/matrix.html>`_ has a good tutorial.
+
+Matrix Syntax
+------------------
+A = [1,2,3,4]
+    creates a new matrix
+A(1)
+    selects the first element of a matrix, **zero-indexed**
+B = [ [1,2,3], [4,5,6], [7,8,9] ]
+    creates a one dimensional matrix
+
+::
+
+    B = [ [1,2,3],
+        [4,5,6],
+        [7,8,9] ]
+
+    creates a two dimensional matrix
+
+Matrix Operations
+------------------
+``inv`` 
+    inverts a square matrix
+
+Meta-Commands
+------------------
+Placing a semicolon at the end of a line prevents the output from being printed to screen.
+
+``whos``
+    Displays variables and their size
+``format long``/``format short``
+    Selects either 4 or 14 decimal place display