bump target sdk version

android/build.gradle

 apply plugin: 'com.android.library'
 
 android {
-    compileSdkVersion 23
+    compileSdkVersion 24
     buildToolsVersion "25.0.2"
 
     defaultConfig {
         minSdkVersion 16
-        targetSdkVersion 23
+        targetSdkVersion 24
         versionCode 1
         versionName "1.0"
     }