renamed output pdf

papers/ipfs/Makefile

@@ -1,8 +1,9 @@
 
-all: ipfs.pdf
+all: ipfs-the-permanent-web.pdf
 
-ipfs.pdf: ipfs.tex sig-alternate.cls
+ipfs-the-permanent-web.pdf: ipfs.tex sig-alternate.cls
 	pdflatex --shell-escape ipfs.tex
+	mv ipfs.pdf ipfs-the-permanent-web.pdf
 
 clean:
 	rm *.bbl *.aux *.dvi *.blg *.log *.gnuplot *.table