documentation of network simplex methods added.
documentation of network simplex methods added.

git-svn-id: 3b9420f7568da4e67ed4a5406dba8e5ca52b1cc2@699 5eb3cf9a-c56f-4155-9a08-806ae8551a6d

coin-or/GiMPy,coin-or/GiMPy