Add Ngaro to Embeddable Scripting Languages

[ngaro](https://github.com/db47h/ngaro) - Ngaro VM implementation enabling scripting in Retro

README.md

@@ -378,6 +378,7 @@ Please take a quick gander at the [contribution guidelines](https://github.com/a
 * [go-python](https://github.com/sbinet/go-python) - naive go bindings to the CPython C-API
 * [golua](https://github.com/aarzilli/golua) - Go bindings for Lua C API
 * [gopher-lua](https://github.com/yuin/gopher-lua) - a Lua 5.1 VM and compiler written in Go
+* [ngaro](https://github.com/db47h/ngaro) - Embeddable Ngaro VM implementation enabling scripting in Retro
 * [otto](https://github.com/robertkrimen/otto) - A JavaScript interpreter written in Go
 * [purl](https://github.com/ian-kent/purl) - Perl 5.18.2 embedded in Go