Make build status icon and the image links on the readme.

README.md

@@ -1,17 +1,16 @@
-# Massive Decks ![The status of the build.](https://travis-ci.org/Lattyware/massivedecks.svg?branch=master)
+# Massive Decks [![Build Status](https://travis-ci.org/Lattyware/massivedecks.svg?branch=master)](https://travis-ci.org/Lattyware/massivedecks)
 
 Massive Decks is a web game based on the excellent [Cards against Humanity][cah] - a
 party game where you play white cards to try and produce the most amusing outcome when combined with the given black
 card. The game can be played on phone or computer and uses [Cardcast decks][cardcast].
 
-You can play the game here:
-
-**[https://massivedecks.herokuapp.com/](https://massivedecks.herokuapp.com/)**
+Play the game at:
+**[https://massivedecks.herokuapp.com/][massivedecks]**
 
 (This is hosted on a service that will automatically sleep if it's unused for a while - it may take a little time to
 load in those cases, but should be fine after the initial load.)
 
-![A screenshot of the game.](https://cloud.githubusercontent.com/assets/1239492/16138236/8299ee32-3433-11e6-8ca2-36993bb83d58.png)
+[![A screenshot of the game.](https://cloud.githubusercontent.com/assets/1239492/16138236/8299ee32-3433-11e6-8ca2-36993bb83d58.png)][massivedecks]
 
 If you have any problems with the game, please [raise an issue][issue]. If you would like to help develop the game,
 check [the wiki][wiki] for how to get set up and help.
@@ -32,6 +31,7 @@ We also use:
 Massive Decks is under [the GPLv3 license][license]. The game concept 'Cards against Humanity' is used under a
 [Creative Commons BY-NC-SA 2.0 license][cah-license] granted by [Cards against Humanity][cah].
 
+[massivedecks]: https://massivedecks.herokuapp.com/
 [cah]: https://cardsagainsthumanity.com/
 [cardcast]: https://www.cardcastgame.com/browse
 [issue]: https://github.com/Lattyware/massivedecks/issues/new