Ignore .kotlin directory

.gitignore

@@ -192,6 +192,7 @@ gradle-app.setting
 ### Kotlin template
 # Compiled class file
 *.class
+.kotlin
 
 # BlueJ files
 *.ctxt
@@ -210,4 +211,3 @@ gradle-app.setting
 # virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
 hs_err_pid*
 replay_pid*
-