updated read me and contributing file(a little)

CONTRIBUTING.md

+# Code Guidelines
+
+Use Feature branches and branches for anything you wish to contribute Adam will maintain the main branch.
+
+Extra comments and verbose code is good !
+If you optimise code spell out the detail in comments feel free to leave the long hand in comments. Make the code as human readable as possible.

README.md

@@ -2,4 +2,8 @@
 
 An exercise to learn play date development by attempting to recreate the a Thrust type game on the play date.
 
-https://en.m.wikipedia.org/wiki/Thrust_(video_game) 
+https://en.m.wikipedia.org/wiki/Thrust_(video_game) #
\ No newline at end of file
+
+# Repo
+
+The original location is on https://gitlab.adamprocter.co.uk and mirrored to git.soton.ac.uk. Soton gitlab install is more up to date, more stable and produces daily backups, my own gitlab is less robust and harder for me to always maintain. So this mirroring acts as an extra back up for my projects.