Rangers have reclaimed top spot in the Scottish Premiership after a 3-0 victory over St Johnstone at McDiarmid Park. A first half wonder strike from January signing Mohamed Diomande proceeded two second half penalties from captain James Tavernier. The result ensures Rangers have moved two points clear of Celtic in the Scottish Premiership table, the Gers leapfrogging their Old Firm rivals following their 1-1 draw v Kilmarnock on Saturday afternoon. Here’s five things we learned as Rangers take their latest step towards the Premiership trophy: Rangers show title credentials v St JohnstoneIf you…