Create stale.yml

Author: flovilmart

.github/stale.yml

@@ -0,0 +1,22 @@
+# Number of days of inactivity before an issue becomes stale
+daysUntilStale: 45
+# Number of days of inactivity before a stale issue is closed
+daysUntilClose: 7
+# Issues with these labels will never be considered stale
+exemptLabels:
+  - pinned
+  - security
+  - good first issue
+  - good first task
+  - bug
+  - needs investigation
+  - up for grabs
+# Label to use when marking an issue as stale
+staleLabel: wontfix
+# Comment to post when marking an issue as stale. Set to `false` to disable
+markComment: >
+  This issue has been automatically marked as stale because it has not had
+  recent activity. If you believe it should stay open, please let us know!
+  As always, we encourage contributions, check out the [Contributing Guide](https://github.com/parse-community/Parse-SDK-iOS-OSX/blob/master/CONTRIBUTING.md)
+# Comment to post when closing a stale issue. Set to `false` to disable
+closeComment: false