title: Cannot build sbt project due to launcher version
body: <p>I have a SBT projec on Ubuntu 14.04. When I run sbt I get the following message:</p>
  
  <pre><code>Detected sbt version sbt.version = 0.13.8
  Starting sbt: invoke with -help for other options
  Cannot find sbt launcher sbt.version = 0.13.8
  Please download: 
    From  http://typesafe.artifactoryonline.com/typesafe/ivy-releases/org.scala-sbt/sbt-launch/sbt.version = 0.13.8/sbt-launch.jar
      To  /home/vagrant/.sbt/.lib/sbt.version/sbt-launch.jar
  </code></pre>
  
  <p>When I try and download from the above url I am met with a 404 response. In fact even the url <a href="http://typesafe.artifactoryonline.com" rel="nofollow">http://typesafe.artifactoryonline.com</a> is giving 404.</p>
  
  <p>Any ideas how I can get the correct sbt version on my system?</p>