Addition to writing checklist (more detail on .gitignore and hidden files)

BlankProjectTemplate/docs/Writing-Checklist.tex

@@ -80,8 +80,10 @@
   \item Symbols used outside of a formula should be formatted the same way as
     they are in the equation.  For instance, when listing the variables in an
     equation, you should still use math mode for the symbols.
-  \item Include a .gitignore file in your repo so that generated files are
-    ignored by git
+  \item Include a \texttt{.gitignore} file in your repo so that generated files
+    are ignored by git.  More information is available on-line on
+    \href{https://en.wikipedia.org/wiki/Hidden_file_and_hidden_directory}
+    {Hidden files and hidden directories}.
   \item All hyperlinks work
   \item Every figure has a caption
   \item Every table has a heading