[COOK-2770] Fix broken maven3 support by moving from maven 3.0.4 to maven 3.0.5

The current maven cookbook attempts to download the maven tarball from:

http://apache.mirrors.tds.net/maven/maven-3/3.0.4/binaries/apache-maven-3.0.4-bin.tar.gz

This URL is now returning 404 Not Found. This pull request addresses this problem, using a valid URL and bumping the maven version to 3.0.5

I also updated the README.md to reflect the proper config names, which seem to have gotten out of sync with what's implemented in the cookbook.