update readme

README.md

@@ -7,4 +7,17 @@
 
 ## Usage
 
-    warp <file.py>
+    warp [-h] [--port PORT] [--host HOST] [--module] file
+
+    a Webbased frontend for ARgparse in Python
+
+    positional arguments:
+    file                  File to run
+
+    optional arguments:
+    -h, --help            show this help message and exit
+    --port PORT, -p PORT  The port to listen on (default 5000)
+    --host HOST           The host to bind to (default 0.0.0.0)
+    --module, -m          If set, loads a module instead of a file
+
+