diff -r 9c80f411faa7 -r 59eeb22c9229 core_templates1/README.md
--- a/core_templates1/README.md	Mon Nov 08 18:57:50 2021 +0000
+++ b/core_templates1/README.md	Mon Nov 08 20:59:32 2021 +0000
@@ -1,4 +1,6 @@
-#assignment2021scala - Core 1
+# assignment2021scala - Core 1
 
-* deadline 21 January, 5pm
-* [coursework description](https://nms.kcl.ac.uk/christian.urban/core_cw01.pdf)
\ No newline at end of file
+* deadline: 21 January, 5pm
+* [coursework description](https://nms.kcl.ac.uk/christian.urban/core_cw01.pdf)
+* reference jar:
+    [collatz.jar](https://nms.kcl.ac.uk/christian.urban/collatz.jar)
\ No newline at end of file