Update README.md

README.md

@@ -1,2 +1,32 @@
 # usd-importer
 USD to HARFANG 3D converter
+
+```
+USD->GS Converter 3.2.5 (f0b82d43186b058be90b4518e2a444cd8581ecf2)
+No input file
+Usage: usd_importer [-out|-o (val)] [-base-resource-path (val)] [-name (val)] [-prefix (val)] [-all-policy
+                     (val)] [-geometry-policy (val)] [-material-policy (val)] [-texture-policy (val)]
+                     [-scene-policy (val)] [-anim-policy (val)] [-geometry-scale (val)] [-finalizer-script
+                     (val)] [-shader|-s (val)] [-recalculate-normal] [-recalculate-tangent] [-detect-geometry-instances]
+                     [-anim-to-file] [-quiet|-q] <input>
+
+-out                      : Output directory
+-base-resource-path       : Transform references to assets in this directory to be relative
+-name                     : Specify the output scene name
+-prefix                   : Specify the file system prefix from which relative assets are to be loaded from
+-all-policy               : All file output policy (skip, overwrite, rename or skip_always) [default=skip]
+-geometry-policy          : Geometry file output policy (skip, overwrite, rename or skip_always) [default=skip]
+-material-policy          : Material file output policy (skip, overwrite, rename or skip_always) [default=skip]
+-texture-policy           : Texture file output policy (skip, overwrite, rename or skip_always) [default=skip]
+-scene-policy             : Scene file output policy (skip, overwrite, rename or skip_always) [default=skip]
+-anim-policy              : Animation file output policy (skip, overwrite, rename or skip_always) (note: only applies when saving animations to their own file) [default=skip]
+-geometry-scale           : Factor used to scale exported geometries
+-finalizer-script         : Path to the Lua finalizer script
+-shader                   : Material pipeline shader [default=core/shader/pbr.hps]
+-recalculate-normal       : Recreate the vertex normals of exported geometries
+-recalculate-tangent      : Recreate the vertex tangent frames of exported geometries
+-detect-geometry-instances: Detect and optimize geometry instances
+-anim-to-file             : Scene animations will be exported to separate files and not embedded in scene
+-quiet                    : Quiet log, only log errors
+input                     : Input FBX file to convert
+```