docs(README): Update usage for list and ls

README.md

@@ -115,10 +115,12 @@ $ muxed my_project
 
 ```shell
 Usage:
-    muxed [options] <project>
+    muxed (list | ls)
+    muxed [flags] [options] <project>
     muxed edit [options] <project>
-    muxed new [options] <project>
-    muxed snapshot [options] <project>
+    muxed load [flags] [options] <project>
+    muxed new [flags] [options] <project>
+    muxed snapshot [flags] [options] <project>
     muxed (-h | --help)
     muxed (-v | --version)
 
@@ -131,15 +133,17 @@ Flags:
 
 Options:
     -p <project_dir>    The directory your project config files live in. Defaults to ~/.muxed/
-    -t <tmux_session>   The name of the running TMUX session to codify
+    -t <session>        The name of the running TMUX session to codify
 
 Args:
     <project>           The name of your project to open
 
 Subcommands:
-    edit <project>                 Edit an existing project file
-    new <project>                  To create a new project file
-    snapshot -t session <project>  Capture a running session and create a config file for it
+    list                             List the availiable project configs
+    edit <project>                   Edit an existing project file
+    load <project>                   Load the specified project, this is the default command
+    new <project>                    To create a new project file
+    snapshot -t <session> <project>  Capture a running session and create a config file for it
 ```
 
 ## Inspiration