title: gradle compile filetree syntax
body: <p>folder structure:</p>
  
  <pre><code>- RootProject Folder
    - MyMainProject
    - MyLibraries
         - Facebook
  </code></pre>
  
  <p>The root project folder has a build.gradle file, but MyMainProject has the one with all the dependencies.</p>
  
  <pre><code>dependencies {
       compile fileTree(dir: 'libs', include: '*.jar')
       compile project(':MyLibraries:Facebook')
  }
  </code></pre>
  
  <p>I feel like <code>compile project</code> doesn't have the correct path. Is there a way to make it look up a directory, so something like <code>../MyLibraries/Facebook</code>? I don't completely understand the colon (:) syntax</p>