You can clone with
HTTPS or Subversion.
Try using with java 1.5, you'll get a class version error. Solution is to download the library source and compile it yourself. Be aware it requires 1.5 or higher. Copy the .jar over to where it belongs and things should work. I'd recommend at least a warning that the compiled version included with this client only works with version X and higher.
Java 5 reached Sun's End of Service Life on October 28th, 2009 1. I strongly recommend upgrading to Java 6.
Good idea, just thought it worth adding to the readme for the gem.
I have updated my repo's copy of the read me to address this concern.