Update readme

README.md

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 # expected
+Single header, work-in-progress implementation of `std::expected` with functional-style extensions.
 
-Work-in-progress implementation of `std::expected` with functional-style extensions
+Clang + GCC: [![Linux Build Status](https://travis-ci.org/TartanLlama/expected.png?branch=master)](https://travis-ci.org/TartanLlama/expected)
+MSVC: [![Windows Build Status](https://ci.appveyor.com/api/projects/status/k5x00xa11y3s5wsg?svg=true)](https://ci.appveyor.com/project/TartanLlama/expected)
+
+Full documentation available at [expected.tartanllama.xyz](https://expected.tartanllama.xyz)
+
+### Compiler support
+
+Tested on:
+
+- Linux CI
+  * clang 3.9
+  * clang 3.8
+  * clang 3.7
+  * clang 3.6
+  * clang 3.5
+  * g++ 5.0
+  * g++ 4.9
+  * g++ 4.8
+- Windows CI
+  * MSVC 2015
+  * MSVC 2017
+- Linux manual
+  * g++ 7.2
+  * g++ 5.4
+
+### Dependencies
+
+Requires [Standardese](https://github.com/foonathan/standardese) for generating documentation.
+
+Requires [Catch](https://github.com/philsquared/Catch) for testing. This is bundled in the test directory.
+
+----------
+
+[![CC0](http://i.creativecommons.org/p/zero/1.0/88x31.png)]("http://creativecommons.org/publicdomain/zero/1.0/")
+
+To the extent possible under law, [Simon Brand](https://twitter.com/TartanLlama) has waived all copyright and related or neighboring rights to the `optional` library. This work is published from: United Kingdom.