update build.gradle to fit react-native build.gradle https://github.com/facebook/react-native/blob/master/ReactAndroid/build.gradle

Author: crazycodeboy

android/build.gradle

@@ -1,12 +1,12 @@
 apply plugin: 'com.android.library'
 
 android {
-    compileSdkVersion 23
-    buildToolsVersion "23.0.1"
+    compileSdkVersion 26
+    buildToolsVersion "26.0.3"
 
     defaultConfig {
         minSdkVersion 16
-        targetSdkVersion 22
+        targetSdkVersion 26
         versionCode 1
         versionName "1.0"
     }
@@ -21,6 +21,6 @@ android {
 dependencies {
     compile fileTree(dir: 'libs', include: ['*.jar'])
     testCompile 'junit:junit:4.12'
-    compile 'com.android.support:appcompat-v7:23.0.1'
+    compile 'com.android.support:appcompat-v7:26.1.0'
     compile "com.facebook.react:react-native:+" // From node_modules
 }