Additional note to writing checklist

BlankProjectTemplate/docs/Writing-Checklist.tex

@@ -36,6 +36,8 @@
 
 \item \LaTeX points
   \begin{todolist}
+  \item Only tex file (and possibly pdf files, or image files) are under version
+    control.
   \item Periods that do not end sentences for one space, like: ``I like Dr.\ Smith.''
   \item Long names in math mode use either matit or text, or equivalent: $coeff$
     versus $\mathit{coeff}$ versus $\text{coeff}$.