Update gitignore file

Hieu Luong · Hieu Luong · commit 874e94d61758 · 2020-08-14T14:35:04.000+02:00
diff --git a/.gitignore b/.gitignore
@@ -18,6 +18,7 @@
 *.zip
 *.tar.gz
 *.rar
+*.pdf
 
 # virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
 hs_err_pid*
