Adjust Makefile for html files

Add a symbolic link for index.html
Only the html directory will retained now

Author: fennecJ

Makefile

@@ -6,6 +6,8 @@ all: lkmpg.tex
 
 html: lkmpg.tex
 	make4ht --shell-escape --utf8 --format html5 --config html.cfg --output-dir html lkmpg.tex
+	ln -sf ./html/lkmpg.html ./html/index.html
+	rm -f *.xref *.svg *.tmp *.html *.css *.4ct *.4tc *.dvi *.lg *.idv
 
 clean:
 	rm -f *.dvi *.aux *.log *.ps *.pdf *.out lkmpg.bbl lkmpg.blg lkmpg.lof lkmpg.toc