Expand help command's knowledge a bit.

libexec/tmuxifier-help

@@ -2,9 +2,15 @@
 set -e
 [ -n "$TMUXIFIER_DEBUG" ] && set -x
 
+# Provide tmuxifier completions
+if [ "$1" == "--complete" ]; then
+  tmuxifier-commands
+  exit
+fi
+
 case $1 in
   "" )
-    echo "Usage: tmuxifier <command> [<args>]
+    echo "usage: tmuxifier <command> [<args>]
 
 Some useful tmuxifier commands are:
    session            Load the specified session layout.
@@ -12,14 +18,25 @@ Some useful tmuxifier commands are:
    list               List all session and window layouts.
    list-sessions      List session layouts.
    list-windows       List window layouts.
-   new-session        Create new session layout and open it with \`$EDITOR\`.
-   new-window         Create new window layout and open it with \`$EDITOR\`.
-   edit-session       Edit specified session layout with \`$EDITOR\`.
-   edit-window        Edit specified window layout with \`$EDITOR\`.
+   new-session        Create new session layout and open it with \`\$EDITOR\`.
+   new-window         Create new window layout and open it with \`\$EDITOR\`.
+   edit-session       Edit specified session layout with \`\$EDITOR\`.
+   edit-window        Edit specified window layout with \`\$EDITOR\`.
    commands           List all tmuxifier commands.
 
 See 'tmuxifier help <command>' for information on a specific command."
     ;;
+  "session" )
+    echo "usage: tmuxifier session <layout_name>
+
+Create a session using the session layout, unless the session already exists
+in which case, we simply switch to the existing one."
+    ;;
+  "window" )
+    echo "usage: tmuxifier window <layout_name>
+
+Create a new window using the specified window layout in the current session."
+    ;;
   * )
     command_path="$(command -v "tmuxifier-$1" || true)"
     if [ -n "$command_path" ]; then