Cd integration (#24)

* - fastlane added
* Updated config.yml

android/.gitignore

@@ -5,6 +5,7 @@ gradle-wrapper.jar
 /gradlew.bat
 /local.properties
 GeneratedPluginRegistrant.java
+/json
 
 # Remember to never publicly share your keystore.
 # See https://flutter.dev/docs/deployment/android#reference-the-keystore-from-the-app