upgrade kotlin to 1.1.60

PonyCui · PonyCui · commit f080f6e13255 · 2017-11-24T17:34:41.000+08:00
diff --git a/build.gradle b/build.gradle
@@ -1,7 +1,7 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 
 buildscript {
-    ext.kotlin_version = '1.1.2-4'
+    ext.kotlin_version = '1.1.60'
     repositories {
         google()
         jcenter()
