Add the LEMON graph library source to the repo

I'll likely be using it, so this just makes it easier to get to from
elsewhere. If I end up not using it then I can just delete it.

1 files changed, 50 insertions, 0 deletions

diff --git a/lemon/README b/lemon/README
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+=====================================================================
+LEMON - a Library for Efficient Modeling and Optimization in Networks
+=====================================================================
+
+LEMON is an open source library written in C++. It provides
+easy-to-use implementations of common data structures and algorithms
+in the area of optimization and helps implementing new ones. The main
+focus is on graphs and graph algorithms, thus it is especially
+suitable for solving design and optimization problems of
+telecommunication networks. To achieve wide usability its data
+structures and algorithms provide generic interfaces.
+
+Contents
+========
+
+LICENSE
+
+   Copying, distribution and modification conditions and terms.
+
+NEWS
+
+   News and version history.
+
+INSTALL
+
+   General building and installation instructions.
+
+lemon/
+
+   Source code of LEMON library.
+
+doc/
+
+   Documentation of LEMON. The starting page is doc/html/index.html.
+
+demo/
+
+   Some example programs to make you easier to get familiar with LEMON.
+
+scripts/
+
+   Scripts that make it easier to develop LEMON.
+
+test/
+
+   Programs to check the integrity and correctness of LEMON.
+
+tools/
+
+   Various utilities related to LEMON.