title: Error in releasing gem
body: <p>Guys i am using jeweler to create a gem . I have successfully written my code and pushed it to      github and my git status is clean . Now when i want to release my gem i did 'rake release' 
  it is creating my gem .... but its is not releasing to rubyforge . and i end up in the following error<br>
  <code>
      Committing trisulrp.gemspec<br>
      Pushing master to origin<br>
      Tagging v1.2.2<br>
  Pushing v1.2.2 to origin<br>
  Generated: trisulrp.gemspec<br>
  trisulrp.gemspec is valid.<br>
  WARNING:  no rubyforge_project specified<br>
    Successfully built RubyGem<br>
    Name: trisulrp<br>
    Version: 1.2.2<br>
    File: trisulrp-1.2.2.gem<br>
  rake aborted!<br>
  Permission denied - (./trisulrp-1.2.2.gem, ./pkg/trisulrp-1.2.2.gem)<br>
  </code>
  I don kno where am goin wrong ....... </p>