Add goreadability (#2485)

README.md

@@ -1629,6 +1629,7 @@ See [go-hardware](https://github.com/rakyll/go-hardware) for a comprehensive lis
 * [golog](https://github.com/mlimaloureiro/golog) - Easy and lightweight CLI tool to time track your tasks.
 * [gopencils](https://github.com/bndr/gopencils) - Small and simple package to easily consume REST APIs.
 * [goplaceholder](https://github.com/michiwend/goplaceholder) - a small golang lib to generate placeholder images.
+* [goreadability](https://github.com/philipjkim/goreadability) - Webpage summary extractor using Facebook Open Graph and arc90's readability.
 * [goreleaser](https://github.com/goreleaser/goreleaser) - Deliver Go binaries as fast and easily as possible.
 * [goreporter](https://github.com/wgliang/goreporter) - Golang tool that does static analysis, unit testing, code review and generate code quality report.
 * [goseaweedfs](https://github.com/linxGnu/goseaweedfs) - SeaweedFS client library with almost full features.