Updates README

Author: c4milo

README.md

@@ -12,6 +12,20 @@ Generates Go code from a WSDL file. This project is originally intended to gener
 * Resolves external XML Schemas recursively, up to 5 recursions.
 * Supports providing WSDL HTTP URL as well as a local WSDL file
 
+### Usage
+```
+gowsdl [OPTIONS]
+
+Application Options:
+  -v, --version     Shows gowsdl version
+  -p, --package=    Package under which code will be generated (myservice)
+  -o, --output=     File where the generated code will be saved (myservice.go)
+  -i, --ignore-tls  Ignores invalid TLS certificates. It is not recomended for production. Use at your own risk
+                    (false)
+
+Help Options:
+  -h, --help        Show this help message
+```
 
 ### TODO
 * If WSDL file is local, resolve external XML schemas locally too instead of failing due to not having a URL to download them from.