Add ngs/go-google-email-audit-api. (#1149)

Go client library for Google G Suite Email Audit API.

README.md

@@ -968,6 +968,7 @@ See [go-hardware](https://github.com/rakyll/go-hardware) for a comprehensive lis
 * [google](https://github.com/google/google-api-go-client) - Auto-generated Google APIs for Go.
 * [google-analytics](https://github.com/chonthu/go-google-analytics) - A simple wrapper for easy google analytics reporting.
 * [google-cloud](https://github.com/GoogleCloudPlatform/gcloud-golang) - Google Cloud APIs Go Client Library.
+* [google-email-audit-api](https://github.com/ngs/go-google-email-audit-api) - Go client library for [Google G Suite Email Audit API](https://developers.google.com/admin-sdk/email-audit/).
 * [gostorm](https://github.com/jsgilmore/gostorm) - GoStorm is a Go library that implements the communications protocol required to write Storm spouts and Bolts in Go that communicate with the Storm shells.
 * [hipchat](https://github.com/andybons/hipchat) - This project implements a golang client library for the Hipchat API.
 * [hipchat (xmpp)](https://github.com/daneharrigan/hipchat) - A golang package to communicate with HipChat over XMPP.