Update to documentation

[ghost]

I would kindly request to upload the snapshot release in any maven repository.

Here is the sample procedure to follow:
http://maven.apache.org/guides/mini/guide-ibiblio-upload.html

I need the maven upload because i would like to use the latest snapshot release of BCEL.

Also could you please update the documentation of Compile section - https://github.com/gousiosg/java-callgraph#compile for the fact that 3 jars are created. Two executable and one standard maven release javacg-0.1-SNAPSHOT.jar.

[gousiosg]

Please fork the project and create a pull request with the proposed fixes