title: Can not Waterlock installation
body: <p>For API keys i want to use JWT using waterlock. But i can not install waterlock. the error message is showing bellow. </p>
  
  <pre><code> npm WARN locking Error: EACCES, open '/home/developer/.npm/_locks/waterlock-96592128476e35c7.lock'
  npm WARN locking     at Error (native) 
  npm WARN locking  /home/developer/.npm/_locks/waterlock-96592128476e35c7.lock failed { [Error: EACCES, open '/home/developer/.npm/_locks/waterlock-96592128476e35c7.lock']
  npm WARN locking   errno: -13,
  npm WARN locking   code: 'EACCES',
  npm WARN locking   path: '/home/developer/.npm/_locks/waterlock-96592128476e35c7.lock' }
  npm ERR! Linux 3.13.0-34-generic
  npm ERR! argv "/usr/local/bin/node" "/usr/local/bin/npm" "install" "waterlock"
  npm ERR! node v0.12.1
  npm ERR! npm  v2.5.1
  
  npm ERR! Attempt to unlock /home/developer/Desktop/Sails/AuthTest/node_modules/waterlock, which hasn't been locked
  npm ERR! 
  npm ERR! If you need help, you may report this error at:
  npm ERR!     &lt;http://github.com/npm/npm/issues&gt;
  
  npm ERR! Please include the following file with any support request:
  npm ERR!     /home/developer/Desktop/Sails/AuthTest/npm-debug.log
  </code></pre>