Add version and basic help information

libexec/tmuxifier-help

@@ -0,0 +1,31 @@
+#! /usr/bin/env bash
+set -e
+[ -n "$TMUXIFIER_DEBUG" ] && set -x
+
+case $1 in
+  "" )
+    echo "Usage: tmuxifier <command> [<args>]
+
+Some useful tmuxifier commands are:
+   session            Load the specified session layout.
+   window             Load the specified window layout into current session.
+   list               List all session and window layouts.
+   list-sessions      List session layouts.
+   list-windows       List window layouts.
+   commands           List all tmuxifier commands.
+
+See 'tmuxifier help <command>' for information on a specific command."
+    ;;
+  * )
+    command_path="$(command -v "tmuxifier-$1" || true)"
+    if [ -n "$command_path" ]; then
+      echo "Sorry, the \`$1' command isn't documented yet."
+      echo
+      echo "You can view the command's source here:"
+      echo "$command_path"
+      echo
+    else
+      echo "tmuxifier: no such command \`$1'"
+    fi
+    ;;
+esac