Update cheatsheets

tldr/gitstats

@@ -0,0 +1,17 @@
+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# gitstats
+
+> Git repository statistics generator.
+> More information: <https://gitstats.sourceforge.net>.
+
+- Generate statistics for a local repository:
+
+`gitstats {{path/to/gitrepo/.git}} {{path/to/output_folder}}`
+
+- View generated statistics in a web browser:
+
+`xdg-open {{path/to/output_folder/index.html}}`