add golang resource (#2157)

free-programming-books.md

@@ -1104,6 +1104,7 @@
 * [Effective Go](https://golang.org/doc/effective_go.html)
 * [Go Bootcamp](http://www.golangbootcamp.com/book) - Matt Aimonetti
 * [Go by Example](https://gobyexample.com)
+* [Go for Javascript Developers](https://github.com/bulim/go-for-javascript-developers)
 * [Learning Go](https://miek.nl/go/)
 * [Let's learn Go!](http://go-book.appspot.com)
 * [Network programming with Go](https://jan.newmarch.name/go/)