update appcompat to 23.4.0

Author: tibbi

app/build.gradle

@@ -28,7 +28,7 @@ android {
 
 dependencies {
     compile fileTree(dir: 'libs', include: ['*.jar'])
-    compile 'com.android.support:appcompat-v7:23.3.0'
+    compile 'com.android.support:appcompat-v7:23.4.0'
     compile 'com.jakewharton:butterknife:8.0.1'
 
     apt 'com.jakewharton:butterknife-compiler:8.0.1'