[boot] Add title and colouring to HTML output

Signed-off-by: Christian I. Nilsson <nikize@gmail.com>
Modified-by: Michael Brown <mbrown@fensystems.co.uk>
Signed-off-by: Michael Brown <mbrown@fensystems.co.uk>

Author: NiKiZe

Makefile

@@ -127,4 +127,5 @@ $(OUTPUTS_BIN_OTHER) : output/% : $(SRCDIR)/bin-%
 
 $(INDEX_DYNAMIC) : output/% : $(ALL_OUTPUTS)
 	( cd $(dir $@) ; \
-	  tree -H "." --filesfirst -I index.html -o index.html )
+	  tree -H "." -C -T "iPXE files" --filesfirst \
+               -I index.html -o index.html )