Handles TODOs in comments

More precisely: TODO, FIXME, XXX

mj.vim

@@ -54,4 +54,8 @@ syntax region None matchgroup=Keyword start="(" matchgroup=Keyword end=")" conta
 syntax region None matchgroup=Keyword start="\[" matchgroup=Keyword end="\]" contains=ALLBUT,Identifier
 
 " Comments
-syntax region Comment start="(\*" end="\*)"
+syntax region Comment start="(\*" end="\*)" contains=mjTodos
+syntax keyword mjTodos TODO FIXME XXX
+
+" Custom groups
+highlight link mjTodos Todo