README.md and pom.xml restored to the previous version (they will be managed later) and the indentation of Node.java and NodeImpl.java has been fixed.
README.md has been updated.
[maven-release-plugin] prepare release gexf4j-0.4.3-BETA
[maven-release-plugin] prepare for next development iteration
Merge pull request #1 from francesco-ficarola/master

taking francesco's master changes