README: update links to repository.

Author: grahambell

README

@@ -138,10 +138,10 @@ Source Code
 
 The starjava source code repository can be viewed at 
 
-   http://starjava.jach.hawaii.edu/viewvc
+   https://github.com/Starlink/starjava
 
-and checked out of its subversion repository by doing
+and checked out of its Git repository by doing
 
-   svn checkout https://starjava.jach.hawaii.edu/svn/trunk
+   git clone git://github.com/Starlink/starjava.git
 
 Peter W. Draper 03-NOV-2006 ([email protected])