title: Signing android apk with gradle-experimental:0.2.0
body: <p>I have successfully modified my build.gradle to work with gradle-experimental however when trying to add a signingConfigs block it fails.  I followed the instructions from <a href="http://tools.android.com/tech-docs/new-build-system/gradle-experimental" rel="nofollow">http://tools.android.com/tech-docs/new-build-system/gradle-experimental</a> as best I can but i always get the following error:</p>
  
  <blockquote>
    <p>A problem occurred configuring project ':app'.</p>
    
    <blockquote>
      <p>The following model rules are unbound:
          model.android.signingConfigs > named(release)
            Mutable:
              - android.signingConfigs.release (com.android.build.gradle.managed.SigningConfig)</p>
    </blockquote>
  </blockquote>
  
  <p>I search for the error but couldn't find anything relevant.  What does "The following model rules are unbound" mean?</p>
  
  <p>Here's what my signingConfig block looks like, it's outside the android block and modified to use = as is the case when using gradle-experimental.</p>
  
  <pre><code>android.signingConfigs {
      release {
          storeFile = file("myreleasekey.keystore")
          storePassword = "password"
          keyAlias = "MyReleaseKey"
          keyPassword = "password"
      }
  }
  </code></pre>