Revert "Revert "add before_install""
Revert "Revert "add before_install""

This reverts commit 5ae223095e9992f2bf8a3f6c160ad2f8541f798a.

josve05a/wikipedia-ios,montehurd/apps-ios-wikipedia,josve05a/wikipedia-ios,montehurd/apps-ios-wikipedia,montehurd/apps-ios-wikipedia,julienbodet/wikipedia-ios,anirudh24seven/wikipedia-ios,julienbodet/wikipedia-ios,anirudh24seven/wikipedia-ios,anirudh24seven/wikipedia-ios,wikimedia/wikipedia-ios,wikimedia/apps-ios-wikipedia,josve05a/wikipedia-ios,montehurd/apps-ios-wikipedia,julienbodet/wikipedia-ios,wikimedia/wikipedia-ios,wikimedia/apps-ios-wikipedia,wikimedia/apps-ios-wikipedia,montehurd/apps-ios-wikipedia,anirudh24seven/wikipedia-ios,josve05a/wikipedia-ios,wikimedia/wikipedia-ios,julienbodet/wikipedia-ios,wikimedia/apps-ios-wikipedia,wikimedia/apps-ios-wikipedia,anirudh24seven/wikipedia-ios,wikimedia/wikipedia-ios,anirudh24seven/wikipedia-ios,julienbodet/wikipedia-ios,julienbodet/wikipedia-ios,anirudh24seven/wikipedia-ios,wikimedia/apps-ios-wikipedia,wikimedia/wikipedia-ios,montehurd/apps-ios-wikipedia,josve05a/wikipedia-ios,montehurd/apps-ios-wikipedia,josve05a/wikipedia-ios,wikimedia/apps-ios-wikipedia,montehurd/apps-ios-wikipedia,julienbodet/wikipedia-ios,anirudh24seven/wikipedia-ios,wikimedia/wikipedia-ios,julienbodet/wikipedia-ios,josve05a/wikipedia-ios,josve05a/wikipedia-ios,wikimedia/wikipedia-ios,wikimedia/apps-ios-wikipedia