updated README.md

README.md

@@ -16,6 +16,9 @@ In order to facilitate different use cases, HtmlSanitizer can be customized at s
 Usage
 -----
 
+- Install the CsQuery NuGet package
+- Copy `HtmlSanitizer.cs` into your project
+
     var sanitizer = new HtmlSanitizer();
     var html = @"<script>alert('xss')</script><div onload=""alert('xss')"""
     	+ @"style=""background-color: test"">Test<img src=""test.gif"""