Update readme

Author: mbilski

README.md

@@ -2,7 +2,7 @@
 
 [![Go Report Card](https://goreportcard.com/badge/github.com/mbilski/exhaustivestruct)](https://goreportcard.com/badge/github.com/mbilski/exhaustivestruct)
 
-exhaustivestruct is a go static analysis tool to find structs that have some, but no all, initialized fields.
+exhaustivestruct is a go static analysis tool to find structs that have uninitialized fields.
 
 > :warning: This linter is meant to be used only for special cases.
 > It is not recommended to use it for all files in a project.
@@ -16,7 +16,11 @@ go get -u github.com/mbilski/exhaustivestruct/cmd/exhaustivestruct
 ## Usage
 
 ```
-exhaustivestruct files/packages
+Usage: exhaustivestruct [-flag] [package]
+
+Flags:
+  -struct_patterns string
+      This is a comma separated list of expressions to match struct packages and names
 ```
 
 ## Example
@@ -30,7 +34,5 @@ type User struct {
 var user = User{ // fails with "Age is missing in User"
   Name: "John",
 }
-
-var user2 = User{} // ignores empty structs
 ```