Merge pull request PyconUK#55 from PyconUK/inglesp-update-ticket-page

Update ticket page to reflect cheaper tickets for less of the conference

content/tickets.md

@@ -9,7 +9,9 @@ Tickets cost:
  * £96 if you are paying for your own ticket;
  * £144 if your employer is paying for your ticket.
 
-Additionally, day tickets are available for £36.
+Entrance to the Thursday is free of charge.
+
+There are cheaper tickets if you can only come for some days, but we hope that you'll come for the whole conference!
 
 [Financial aid](/financial-aid/) is available to help cover ticket costs for
 those who would otherwise not be able to afford to attend the conference.