Created node.js encoder example

[maxgronlund]

https://github.com/maxgronlund/flac.js
I'm trying to figure how to create a decoder example

[Rillke]

Are you out for client side decoding/encoding, i.e. in-browser? Then, this is the right way to go. Otherwise, just download the binaries (or the source code and compile that) invoke the tool from node.js