title: Can't resolve dependency in Android Studio with jcenter
body: <p>Why my program hang on resolving dependency for appDebug in andorid studio? I can't resolve any library.</p>
  
  <p>This is my root  gradle file:</p>
  
  <pre><code>buildscript {
  repositories {
  
      jcenter()
  
  }
  dependencies {
      classpath 'com.android.tools.build:gradle:1.5.0'
  
      // NOTE: Do not place your application dependencies here; they belong
      // in the individual module build.gradle files
  }
  }
  
  allprojects {
  repositories {
      jcenter()
  }
  }
  </code></pre>
  
  <p>and this is my app gradle :</p>
  
  <pre><code>apply plugin: 'com.android.application'
  
  android {
  compileSdkVersion 23
  buildToolsVersion "23.0.2"
  
  defaultConfig {
      applicationId "com.example.alimohammadi.myapplication"
      minSdkVersion 15
      targetSdkVersion 23
      versionCode 1
      versionName "1.0"
  }
  buildTypes {
      release {
          minifyEnabled false
          proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
      }
  }
  }
  
  dependencies {
  compile fileTree(dir: 'libs', include: ['*.jar'])
  testCompile 'junit:junit:4.12'
  compile 'com.android.support:appcompat-v7:23.1.1'
  compile 'com.android.support:design:23.1.1'
  }
  </code></pre>
  
  <p>And I can't resolve junit. And I can't access to <a href="https://jcenter.bintray.com/" rel="noreferrer">https://jcenter.bintray.com/</a> with my browser (it gave me connection time out while other site return true response).</p>