[doc] Update links to point to gosu/gosu

README.txt

@@ -5,11 +5,11 @@ links to all relevant information.
 
  The actual source code, wiki, issue tracker etc. are all hosted on GitHub:
 
-    http://github.com/jlnr/gosu/
+    http://github.com/gosu/gosu/
 
  The best entry point into Gosu's documentation is the wiki home page:
 
-    http://github.com/jlnr/gosu/wiki
+    http://github.com/gosu/gosu/wiki
 
  Try doing the tutorial there if you don't know how to start out. Or look at
 one of the games in the Gosu Users board.
@@ -18,7 +18,7 @@ one of the games in the Gosu Users board.
 port and transmogrify all parts of it. The only license that may affect you by
 indirection is libogg's (BSD-style). If you release a Gosu game in any common
 binary form, you will need to mention use of libogg and libvorbis somewhere.
- 
+
  Complaints, questions, feedback?
 * Visit the boards,                         http://www.libgosu.org/
 * try your luck in the chat,              irc://irc.freenode.org/gosu