See the included script build_run_example.sh as an example of how to build the library
and use it with one toy example, HelloGraph.scala. This example simply creates a
complete directed graph with 100 nodes and prints the number of edges in this graph. You
can run this script by just typing examples/build_run_example.sh which will
build and run the HelloGraph.scala example with default options. You can also run
other examples for instance by running examples/build_run_example.sh RandomWalk 10000