issue 18: support for multipage assignment

ctufit-thesis.tex

@@ -116,7 +116,7 @@
 \begin{document} 
 \frontmatter\frontmatterinit % do not remove these two commands
-\includepdf{assignment-include.pdf} % replace that file with your thesis assignment provided by study office
+\includepdf[pages={1-}]{assignment-include.pdf} % replace that file with your thesis assignment provided by study office
 \thispagestyle{empty}\cleardoublepage\maketitle % do not remove these three commands