title: Android gradle signingConfig error
body: <p>I try signing my Application like <a href="http://tools.android.com/tech-docs/new-build-system/user-guide#TOC-Signing-Configurations" rel="noreferrer">this link</a>.
  I write my signingConfigs settings but I get "Could not find property" error.</p>
  
  <p>This my build.gradle</p>
  
  <pre><code>apply plugin: 'android'
  
      android {
          compileSdkVersion 19
          buildToolsVersion '19.0.3'
          defaultConfig {
              minSdkVersion 11
              targetSdkVersion 19
              versionCode 1
              versionName "Andy Warhol"
          }
          buildTypes {
              debug {
                  proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
                  debuggable false
                  jniDebugBuild false
                  signingConfig signingConfigs.myconfig
              }
              release {
                  proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
                  debuggable false
                  jniDebugBuild false
              }
          }
          signingConfigs {
              myconfig {
                  keyAlias 'xxx'
                  keyPassword 'xxx'
                  storeFile file('xxx')
                  storePassword 'xxx'
              }
          }
      }
  
      dependencies {
          compile 'com.android.support:appcompat-v7:+'
          compile 'com.google.android.gms:play-services:4.0.30'
          compile fileTree(dir: 'libs', include: ['*.jar'])
          compile files('libs/picasso-2.2.0.jar')
          compile files('libs/acra-4.5.0.jar')
          compile files('libs/libGoogleAnalyticsServices.jar')
      }
  </code></pre>
  
  <p>This is my error</p>
  
  <blockquote>
    <p>Gradle 'BulentTirasMobileApp' project refresh failed:
    Could not find property 'myconfig' on SigningConfig container.</p>
  </blockquote>