title: Unable to compile my android project
body: <p>When i try to compile my android project iam getting the following error.</p>
  
  <pre><code>  Error:A problem occurred configuring project ':app'.
    Could not resolve all dependencies for configuration ':app:_debugCompile'.
    Could not find com.android.support:appcompat-v7:21.0.1.
       Searched in the following locations:
           https://jcenter.bintray.com/com/android/support/appcompat-v7/21.0.1/appcompat-v7-21.0.1.pom
           https://jcenter.bintray.com/com/android/support/appcompat-v7/21.0.1/appcompat-v7-21.0.1.jar
           file:/home/baman/Android/Sdk/extras/android/m2repository/com/android/support/appcompat-v7/21.0.1/appcompat-v7-21.0.1.pom
           file:/home/baman/Android/Sdk/extras/android/m2repository/com/android/support/appcompat-v7/21.0.1/appcompat-v7-21.0.1.jar
           file:/home/baman/Android/Sdk/extras/google/m2repository/com/android/support/appcompat-v7/21.0.1/appcompat-v7-21.0.1.pom
           file:/home/baman/Android/Sdk/extras/google/m2repository/com/android/support/appcompat-v7/21.0.1/appcompat-v7-21.0.1.jar
       Required by:
           SriLankaTemples:app:unspecified
     Could not find com.android.support:recyclerview-v7:21.0.1.
       Searched in the following locations:
           https://jcenter.bintray.com/com/android/support/recyclerview-v7/21.0.1/recyclerview-v7-21.0.1.pom
           https://jcenter.bintray.com/com/android/support/recyclerview-v7/21.0.1/recyclerview-v7-21.0.1.jar
           file:/home/baman/Android/Sdk/extras/android/m2repository/com/android/support/recyclerview-v7/21.0.1/recyclerview-v7-21.0.1.pom
           file:/home/baman/Android/Sdk/extras/android/m2repository/com/android/support/recyclerview-v7/21.0.1/recyclerview-v7-21.0.1.jar
           file:/home/baman/Android/Sdk/extras/google/m2repository/com/android/support/recyclerview-v7/21.0.1/recyclerview-v7-21.0.1.pom
           file:/home/baman/Android/Sdk/extras/google/m2repository/com/android/support/recyclerview-v7/21.0.1/recyclerview-v7-21.0.1.jar
       Required by:
           SriLankaTemples:app:unspecified
  </code></pre>
  
  <p>Here is my Gradle file</p>
  
  <pre><code>    apply plugin: 'com.android.application'
  
  android {
      compileSdkVersion 19
      buildToolsVersion "23.0.0 rc2"
  
      defaultConfig {
          applicationId "lk.lankahomes.baman.srilankatemples"
          minSdkVersion 16
          targetSdkVersion 21
          versionCode 1
          versionName "1.0"
      }
      buildTypes {
          release {
              minifyEnabled false
              proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
          }
      }
  }
  
  dependencies {
      compile fileTree(include: ['*.jar'], dir: 'libs')
      compile 'com.android.support:appcompat-v7:21.0.1'
      compile 'com.android.support:recyclerview-v7:21.0.1'
  }
  </code></pre>
  
  <p>can some one help me to fix this thank you.</p>