update gitignore

.gitignore

@@ -1,8 +1,16 @@
-_site
-.sass-cache
 removal-request.txt
 openvas/
 Gemfile.lock
-openring
 assets/me.png
 webgen
+
+# Created by https://www.toptal.com/developers/gitignore/api/jekyll
+# Edit at https://www.toptal.com/developers/gitignore?templates=jekyll
+
+### Jekyll ###
+_site/
+.sass-cache/
+.jekyll-cache/
+.jekyll-metadata
+
+# End of https://www.toptal.com/developers/gitignore/api/jekyll