title: google-play-services_lib.jar missing after updating to latest version (3.1)
body: <p>I've been using Google play services in my app for a while with no prob. I'm using Eclipse. I've updated play services(and ADT and SDK) to the latest version after I/O and now I can not get my app to build.  I have added the google-play-services_lib project to my app as a library project.  However when I go to the java build path for my project I get a red X next to google-play-services_lib under android dependencies.  It is looking in the /bin/ dir for google-play-services_lib.jar, however it is never build.  Anyone run into this issue?  </p>