title: Several Android apps in the same Gradle project
body: <p>I have a fairly typical Android-Studio/Gradle project with several library modules and one module that defines the launcher activity. So, one APK, so far so good.</p>
  
  <p>But I want to have a second APK generated out of a new top-level project. Note that it's not just a <em>flavor</em>, it's a different app that needs to be in a different module. Still I want to reuse most library modules, so I want it to be in the same Gradle project (and the same Git repo).</p>
  
  <p>Can I just create a new Android module (<code>apply plugin: 'android'</code>) with its own launcher activity? In that case, what will <code>./gradlew assemble</code> build?</p>