Move pages under tldr, lint run.sh, update docs

tldr/linux/nsnake

@@ -0,0 +1,29 @@
+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# nsnake
+
+> Snake game in the terminal.
+> More information: <https://github.com/alexdantas/nsnake/>.
+
+- Start a snake game:
+
+`nsnake`
+
+- Navigate the snake:
+
+`{{Up|Down|Left|Right arrow key}}`
+
+- Pause/unpause the game:
+
+`p`
+
+- Quit the game:
+
+`q`
+
+- Display help during the game:
+
+`h`