title: android studio can't build project
body: <p>After removing the old android studio, I install a new one, (Beta)0.8.6. Build number:AI-135.1339820.
  When I try to build my project, it can't be built, the following is log:</p>
  
  <pre><code>Error:A problem occurred configuring root project 'Game'.
  </code></pre>
  
  <blockquote>
    <p>Could not resolve all dependencies for configuration ':classpath'.
    Could not resolve com.android.tools.build:gradle:0.12.2.
         Required by:
             :Game:unspecified
    Could not GET '<a href="http://jcenter.bintray.com/com/android/tools/build/gradle/0.12.2/gradle-0.12.2.pom" rel="nofollow">http://jcenter.bintray.com/com/android/tools/build/gradle/0.12.2/gradle-0.12.2.pom</a>'.
    Can't connect to SOCKS proxy:Connection refused</p>
  </blockquote>
  
  <p>Game is my project's name. I have struggled this problem with hours, but without any progress.</p>