Use relative links between READMEs.

README.md

@@ -7,12 +7,12 @@ Licensed under the Artistic License 2.0, see License.txt.
 
 To get started building the AGS engine, see the platform specific instructions or forum threads:
 
--    [Linux](https://github.com/adventuregamestudio/ags/blob/master/debian/README.md) ([Forum thread](http://www.adventuregamestudio.co.uk/forums/index.php?topic=46152.0))
+-    [Linux](debian/README.md) ([Forum thread](http://www.adventuregamestudio.co.uk/forums/index.php?topic=46152.0))
 -    Windows ([Forum thread](http://www.adventuregamestudio.co.uk/forums/index.php?topic=46847.0))
--    [Android](https://github.com/adventuregamestudio/ags/blob/master/Android/README.md) ([Forum thread](http://www.adventuregamestudio.co.uk/forums/index.php?topic=44768.0))
--    [iOS](https://github.com/adventuregamestudio/ags/blob/master/iOS/README.md) ([Forum thread](http://www.adventuregamestudio.co.uk/forums/index.php?topic=46040.0))
--    [PSP](https://github.com/adventuregamestudio/ags/blob/master/PSP/README.md) ([Forum thread](http://www.adventuregamestudio.co.uk/forums/index.php?topic=43998.0))
--    [Mac OS X](https://github.com/adventuregamestudio/ags/blob/master/OSX/README.md) ([Forum thread](http://www.adventuregamestudio.co.uk/forums/index.php?topic=47264.0))
+-    [Android](Android/README.md) ([Forum thread](http://www.adventuregamestudio.co.uk/forums/index.php?topic=44768.0))
+-    [iOS](iOS/README.md) ([Forum thread](http://www.adventuregamestudio.co.uk/forums/index.php?topic=46040.0))
+-    [PSP](PSP/README.md) ([Forum thread](http://www.adventuregamestudio.co.uk/forums/index.php?topic=43998.0))
+-    [Mac OS X](OSX/README.md) ([Forum thread](http://www.adventuregamestudio.co.uk/forums/index.php?topic=47264.0))
 
 ##Issue tracker