Merge pull request #942 from jturmel/master

Ignore output from Crashlytics JetBrains plugin

Global/JetBrains.gitignore

@@ -24,3 +24,6 @@ out/
 
 # generated by JIRA plugin
 atlassian-ide-plugin.xml
+
+# generated by Crashlytics plugin (for Android Studio and Intellij)
+com_crashlytics_export_strings.xml