Added Comments

Author: ajbuchholz

CRO/tests/tools.pm6

@@ -1,5 +1,7 @@
+#Defines the Module Name. Make sure the file extension is .pm6
 unit module tools;
-  
+
+#Rememeber to include "is export" after the first line in the function otherwise an error will occur.
 sub avg($n1, $n2) is export {
     my $add = $n1 + $n2;
     my $avg = $add / 2;