Update README

README.md

@@ -18,6 +18,32 @@ go install forge.cadoles.com/wpetit/scaffold/cmd/scaffold
 TODO
 ```
 
+## Usage
+
+```
+NAME:
+   scaffold - generate/update directory tree from template
+
+USAGE:
+   scaffold [global options] command [command options] [arguments...]
+
+COMMANDS:
+   from, n  generate a new project from a given template url
+   help, h  Shows a list of commands or help for one command
+
+GLOBAL OPTIONS:
+   --help, -h  show help (default: false)
+```
+
+### `scaffold from [command options] <URL>`
+
+```
+OPTIONS:
+   --directory DIR, -d DIR   Set destination to DIR (default: "./")
+   --manifest FILE, -m FILE  The scaffold manifest FILE (default: "scaffold.yml")
+   --help, -h                show help (default: false)
+```
+
 ## Licence
 
 GPL-3.0