title: Gradle dependency version syntax
body: <p>I'm new to gradle. I have such a dependecy im my gradle script:</p>
  
  <pre><code>compile group: 'com.ning', name: 'async-http-client', version: '[1.6.1,1.9['
  </code></pre>
  
  <p>Could someone explain me, what does this <code>version: '[1.6.1,1.9['</code> mean in this case?  </p>