Moved release signing into separate buildscript

app/build.gradle

@@ -10,12 +10,8 @@ android {
         minSdkVersion 9
         targetSdkVersion 21
     }
-    signingConfigs {
-        release
-    }
     buildTypes {
         release {
-            signingConfig signingConfigs.release
             minifyEnabled false
             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
         }
@@ -56,26 +52,4 @@ dependencyVerification {
     ]
 }
 
-def Properties props = new Properties()
+apply from: "${project.rootDir}/gradle/signing.gradle"
-def propFile = new File(project.rootDir, 'signing.properties')
-
-if (propFile.canRead()) {
-    props.load(new FileInputStream(propFile))
-
-    if (props != null &&
-            props.containsKey('STORE_FILE') &&
-            props.containsKey('STORE_PASSWORD') &&
-            props.containsKey('KEY_ALIAS') &&
-            props.containsKey('KEY_PASSWORD')) {
-        android.signingConfigs.release.storeFile = file(props['STORE_FILE'])
-        android.signingConfigs.release.storePassword = props['STORE_PASSWORD']
-        android.signingConfigs.release.keyAlias = props['KEY_ALIAS']
-        android.signingConfigs.release.keyPassword = props['KEY_PASSWORD']
-    } else {
-        println 'signing.properties found but some entries are missing'
-        android.buildTypes.release.signingConfig = null
-    }
-} else {
-    println 'signing.properties not found'
-    android.buildTypes.release.signingConfig = null
-}

gradle/signing.gradle

@@ -0,0 +1,34 @@
+android {
+    signingConfigs {
+        release
+    }
+    buildTypes {
+        release {
+            signingConfig signingConfigs.release
+        }
+    }
+}
+
+def Properties props = new Properties()
+def propFile = new File(project.rootDir, 'signing.properties')
+
+if (propFile.canRead()) {
+    props.load(new FileInputStream(propFile))
+
+    if (props != null &&
+            props.containsKey('STORE_FILE') &&
+            props.containsKey('STORE_PASSWORD') &&
+            props.containsKey('KEY_ALIAS') &&
+            props.containsKey('KEY_PASSWORD')) {
+        android.signingConfigs.release.storeFile = file(props['STORE_FILE'])
+        android.signingConfigs.release.storePassword = props['STORE_PASSWORD']
+        android.signingConfigs.release.keyAlias = props['KEY_ALIAS']
+        android.signingConfigs.release.keyPassword = props['KEY_PASSWORD']
+    } else {
+        println 'signing.properties found but some entries are missing'
+        android.buildTypes.release.signingConfig = null
+    }
+} else {
+    println 'signing.properties not found'
+    android.buildTypes.release.signingConfig = null
+}