title: jenkins build tells my project is not a part of grails application
body: <p>HI im running a jenkins instance for a grails app build and deploy but, i am running into a problem now, somewhere during the buid it tell me that my checkedout project is not a part of grails application.
  The message logged is :</p>
  
  <pre><code>Started by GitHub push by pedrospaulus
  Building remotely on s-ea17527f in workspace /scratch/jenkins/workspace/cloudbees_doofry_jenkins_2
  Checkout:cloudbees_doofry_jenkins_2 / /scratch/jenkins/workspace/cloudbees_doofry_jenkins_2 - hudson.remoting.Channel@3a1ecfab:s-ea17527f
  Using strategy: Default
  Last Built Revision: Revision 7d9e4790f577b6c4d3a53338653647d1f1400701 (origin/HEAD, origin/master)
  Fetching changes from 1 remote Git repository
  Fetching upstream changes from origin
  Seen branch in repository origin/HEAD
  Seen branch in repository origin/master
  Seen 2 remote branches
  Commencing build of Revision 4716cf96f4edcc7eef3a4d6826ef3a966aa9a670 (origin/HEAD, origin/master)
  Checking out Revision 4716cf96f4edcc7eef3a4d6826ef3a966aa9a670 (origin/HEAD, origin/master)
  Warning : There are multiple branch changesets here
  [cloudbees_doofry_jenkins_2] $ /opt/grails/grails-1.3.7/bin/grails war target/cloudbees_doofry.war --non-interactive
  Welcome to Grails 1.3.7 - http://grails.org/
  Licensed under Apache Standard License 2.0
  Grails home is set to: /opt/grails/grails-1.3.7
  
  Base Directory: /scratch/jenkins/workspace/cloudbees_doofry_jenkins_2
  Resolving dependencies...
  Dependencies resolved in 4346ms.
  /scratch/jenkins/workspace/cloudbees_doofry_jenkins_2 does not appear to be part of a Grails application.
  The following commands are supported outside of a project:
      add-proxy
      clear-proxy
      create-app
      create-plugin
      help
      list-plugins
      package-plugin
      plugin-info
      remove-proxy
      set-proxy
  Run 'grails help' for a complete list of available scripts.
  Build step 'Build With Grails' marked build as failure
  Archiving artifacts
  [cloudbees-deployer] Skipping deployment as build result is FAILURE
  Sending e-mails to: pedrospaulus@gmail.com
  Finished: FAILURE
  </code></pre>
  
  <p>Any idea what im doing wrong ??
  tkx</p>