Update part of readme to 0.8.0
Update part of readme to 0.8.0

As suggested in Issue #224

danielcompton/re-frame,Day8/re-frame,chpill/re-frankenstein,martinklepsch/re-frame,chpill/re-frankenstein,daiyi/re-frame,chpill/re-frankenstein,daiyi/re-frame,danielcompton/re-frame,daiyi/re-frame,martinklepsch/re-frame,martinklepsch/re-frame,richardharrington/re-frame,Day8/re-frame,richardharrington/re-frame,richardharrington/re-frame,danielcompton/re-frame,Day8/re-frame