announcing the challenge

README.md

@@ -3,9 +3,16 @@ The ReactEurope hackathon.
 
 The theme of the hackathon will be posted here on Friday June 26th 2015 at 2pm UTC.
 
+We have two challenge, you need to pick one:
+- Challenge #1: build a mobile app using the meetup api that shows all reactjs meetup around the world, prize is a GoPro hero 4 sponsored by [RedBadger](http://red-badger.com/)
+- Challenge #2: build an app using [touchstone.js](http://touchstonejs.io/), prize is €700 credit on Apple Store.
+
+See this blog post for more details on the challenges.
+
 Once the theme is posted, you will need to:
 - fork this repo.
 - create a directory containing your project.
-- do a pull request once you're done, before Monday 29th of June, 2pm UTC if you will not be able to attend the hackathon at Mozilla office. **REQUIRED: In your pull request title, make to specify challenge 1 or challenge 2 at the start of your PR's title**.
+- do a pull request once you're done, before Monday 29th of June, 2pm UTC if you will not be able to attend the hackathon at Mozilla office. **REQUIRED: In your pull request title, make to specify "challenge RedBadger" or "challenge Thinkmill" at the start of your PR's title**.
 - you will still be able to update your pull request until July 1st 4pm UTC just like people attending the hackathon at Mozilla office.
-- the winner of the hackathon will be announced at the conference and will be able to present her or his project during the conference.
+**REQUIRED: In your pull request title, make to specify "challenge RedBadger" or "challenge Thinkmill" at the start of your PR's title. What could help: screenshots and a screencast in your PR, they can be posted as commets after the deadline**.
+- The two winners will get 5 minutes each to present their app at the start of the lightning session on the 2nd of July at 6pm.