Add grapes (#1080)

* Update README.md

* new grapes

github.com repo: https://github.com/yaronsumel/grapes
godoc.org: https://godoc.org/github.com/yaronsumel/grapes
goreportcard.com: https://goreportcard.com/report/github.com/yaronsumel/grapes
coverage service link (gocover, coveralls etc.): N/A

Make sure that you've checked the boxes below before you submit PR:

 I have added my package in alphabetical order
 I know that this package was not listed before
 I have added godoc link to the repo and to my pull request
 I have added coverage service link to the repo and to my pull request
 I have added goreportcard link to the repo and to my pull request
 I have read Contribution guidelines and Quality standard.

README.md

@@ -1216,6 +1216,7 @@ Software written in Go.
 * [govvv](https://github.com/ahmetalpbalkan/govvv) - A “go build” wrapper to easily add version information into Go binaries
 * [gox](https://github.com/mitchellh/gox) - A dead simple, no frills Go cross compile tool.
 * [goxc](https://github.com/laher/goxc) - build tool for Go, with a focus on cross-compiling and packaging.
+* [grapes](https://github.com/yaronsumel/grapes) -  lightweight tool designed to distribute commands over ssh with ease.
 * [GVM](https://github.com/moovweb/gvm) - GVM provides an interface to manage Go versions.
 * [kala](https://github.com/ajvb/kala) - Simplistic, modern, and performant job scheduler.
 * [kubernetes](https://github.com/kubernetes/kubernetes) - Container Cluster Manager from Google.