Update README.md

Signed-off-by: hericiumvevo <hericiumvevo@getcryst.al>

README.md

@@ -1,3 +1,9 @@
+# **THIS PROJECT HAS BEEN MIGRATED TO GITLAB**
+Please make any PRs here, rather than to the GitHub: https://git.getcryst.al/crystal
+
+# REPOSITORIES HERE ARE **OUTDATED**, GO TO THE LINK  BELOW
+# ---- > https://git.getcryst.al/crystal < ----
+
 # Crystal Linux [GRUB](https://gnu.org/software/grub/) Theme
 
 > A customised theme for [GRUB](https://gnu.org/software/grub/) using the Crystal Linux branding.