Merge pull request #4608 from afcuttin/attachfile2

Added .atfi extension for package attachfile2

Author: wirecat

TeX.gitignore

@@ -59,6 +59,9 @@ acs-*.bib
 # amsthm
 *.thm
 
+# attachfile2
+*.atfi
+
 # beamer
 *.nav
 *.pre