README: Make real links.

README.markdown

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 About Quicksilver B5X on Github
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-This repository contains the current source code of Quicksilver. If you're having issues with the latest Quicksilver version, feel free to log them at the issue tracker at http://github.com/tiennou/blacktree-alchemy/issues. 
+This repository contains the current source code of Quicksilver. If you're having issues with the latest Quicksilver version, feel free to log them at the [issue tracker](http://github.com/tiennou/blacktree-alchemy/issues). 
 
 The B5X branch contains the source for the currently released Quicksilver.
 The master branch contains the code for the "next-gen" Quicksilver. Right now it features an updated plugin system, and Catalyst, which aims to provide triggers as a preference pane, and that's it. It is usable, but all plugins are incompatible without some extra work.
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 Where to find it ?
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-Go look on the download pages around. The "most official" one is at http://github.com/tiennou/blacktree-alchemy/downloads, but there are some others at http://github.com/andreberg/blacktree-alchemy/downloads. Choose the one with the biggest number ;-).
+Go look on the download pages around. The "most official" one is [here](http://github.com/tiennou/blacktree-alchemy/downloads), but there are some [others](http://github.com/andreberg/blacktree-alchemy/downloads). Choose the one with the biggest number ;-).
 
 Before You Try It Out
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