Merge pull request #14 from lucavinci/master

🎉 Updated the kotlin plugin version to 1.3.61

Author: LinusU

android/build.gradle

@@ -2,7 +2,7 @@ group 'com.linusu.flutter_web_auth'
 version '1.0-SNAPSHOT'
 
 buildscript {
-    ext.kotlin_version = '1.3.0'
+    ext.kotlin_version = '1.3.61'
     repositories {
         google()
         jcenter()