Added crashlytics sh file to the gitignore, not sure if that needs to be there...

Added crashlytics sh file to the gitignore, not sure if that needs to be there or not so it can be changed

.gitignore

@@ -73,3 +73,6 @@ WhatsOpen/WhatsOpen/crashlyticsbuild.sh
 # Maybe this should be in VC but it's only going to be used by people pushing builds out
 # and has a Slack webhook token in it
 WhatsOpen/fastlane/
+
+#crashlytics file
+crashlyticsbuild.sh