updated makefile and .gitignore to us latexmk instead of rubber

letter_template/Makefile

@@ -1,21 +1,21 @@
 #!/usr/bin/make
 
 all: $(patsubst %.tex,%.pdf,$(wildcard *.tex)) 
-pdf: all
 
-%.pdf: %.tex
-	rubber -fd $<
+%.pdf: %.tex 
+	latexmk -f -pdf $<
 
 clean: 
-	rubber -d --clean *.tex
+	latexmk -C *.tex
 	rm -f *.tmp
-	rm -f figures/*.pdf
+	rm -f vc
 
 viewpdf: all
 	evince *.pdf
 
-spell:
-	aspell -c -t --tex-check-comments -b text.tex
+vc:
+	vc-git
 
+pdf: all
 
 .PHONY: clean all