Add .latexmkrc and PDF to files.

Author: ionathanch

.latexmkrc

@@ -0,0 +1,4 @@
+$pdf_mode = 4;
+$lualatex = 'lualatex --shell-escape --interaction=nonstopmode --synctex=1 %O %S';
+$bibtex_use = 2;
+@default_files = ('main.tex');