Add README

Author: atifaziz

High5.sln

@@ -17,6 +17,7 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution
 		LICENSE = LICENSE
 		pack.cmd = pack.cmd
 		pack.sh = pack.sh
+		README.md = README.md
 		test.cmd = test.cmd
 		test.sh = test.sh
 		THIRD-PARTY-NOTICES = THIRD-PARTY-NOTICES

README.md

@@ -0,0 +1,53 @@
+# High5
+
+[![Build Status][win-build-badge]][win-builds]
+[![Build Status][nix-build-badge]][nix-builds]
+[![NuGet][nuget-badge]][nuget-pkg]
+[![MyGet][myget-badge]][edge-pkgs]
+
+High5 is a [spec-compliant HTML][html] parser [.NET Standard][netstd] library.
+It parses HTML the way the latest version of your browser does.
+
+High5 was born by porting [parse5][parse5], which is in JavaScript, to C#.
+
+High5's parser is generic. It can work with any tree model for an HTML
+document. A default model implementation is supplied that builds a read-only
+tree of HTML nodes.
+
+
+## Examples
+
+Parse an HTML document:
+
+```c#
+var html = await new HttpClient().GetStringAsync("http://www.example.com/");
+var document = Parser.Parse(html);
+```
+
+Parse an HTML document:
+
+```c#
+var html = @"
+  <div>
+    <h1>Example Domain</h1>
+    <p>This domain is established to be used for illustrative examples
+       in documents. You may use this domain in examples without prior
+       coordination or asking for permission.</p>
+    <p><a href='http://www.iana.org/domains/example'>More information...</a></p>
+  </div>";
+
+var fragment = Parser.ParseFragment(html, null);
+```
+
+
+[win-build-badge]: https://img.shields.io/appveyor/ci/raboof/high5.svg?label=windows
+[win-builds]: https://ci.appveyor.com/project/raboof/high5
+[nix-build-badge]: https://img.shields.io/travis/atifaziz/High5.svg?label=linux
+[nix-builds]: https://travis-ci.org/atifaziz/High5
+[myget-badge]: https://img.shields.io/myget/raboof/vpre/High5.svg?label=myget
+[edge-pkgs]: https://www.myget.org/feed/raboof/package/nuget/High5
+[nuget-badge]: https://img.shields.io/nuget/v/High5.svg
+[nuget-pkg]: https://www.nuget.org/packages/High5
+[html]: https://html.spec.whatwg.org
+[netstd]: https://docs.microsoft.com/en-us/dotnet/standard/net-standard
+[parse5]: https://github.com/inikulin/parse5