Add tmux

tmux/commands.md

@@ -0,0 +1,12 @@
+# tmux Commands
+This document will refer to tmux as the alias `t`.
+## New tmux session
+`t`
+## New tmux session with name
+`t new -s NAME`
+## List tmux session
+`t ls`
+## Attach back to a session
+`t a -t SESSION`
+## Attach back to the last session
+`t a`