Only want Stetho in the debug variant.

sample/build.gradle

@@ -47,5 +47,5 @@ dependencies {
     compile 'com.jakewharton:butterknife:' + versions.butterKnife
     annotationProcessor 'com.jakewharton:butterknife-compiler:' + versions.butterKnife
 
-    compile 'com.facebook.stetho:stetho:1.4.2'
+    debugCompile 'com.facebook.stetho:stetho:1.4.2'
 }

sample/src/main/java/com/afollestad/materialdialogssample/App.java

@@ -11,6 +11,8 @@ public class App extends Application {
   @Override
   public void onCreate() {
     super.onCreate();
-    Stetho.initializeWithDefaults(this);
+    if (BuildConfig.DEBUG) {
+      Stetho.initializeWithDefaults(this);
+    }
   }
 }