Specify build tools 27.0.3 explicitly

trubitsyn · web-flow · commit db93e5fe8fac · 2018-01-22T13:07:31.000+03:00
diff --git a/app/build.gradle b/app/build.gradle
@@ -4,6 +4,7 @@ apply plugin: 'kotlin-android-extensions'
 
 android {
     compileSdkVersion 27
+    buildToolsVersion "27.0.3"
 
     defaultConfig {
         applicationId "com.simplemobiletools.filemanager"
