Show error for invalid bet here

[todo]

cointoss/cointoss/app/controllers/bets_controller.rb

Lines 36 to 41 in b127aae

     # TODO: Show error for invalid bet here 
  
     render 'rooms/show' 
     return 
   end 
 end 

---

This issue was generated by todo based on a TODO comment in b127aae when #3 was merged. cc @hawkins.