Added possibility to run grumble with own readline instance

[activey]

closes #51

[skaldesh]

Thank you, I will have a look at this over the course of this day :)

[skaldesh]

LGTM, I need to run the sample once and understand it :)

[skaldesh]

I've run the sample, that is very neat with the remote stuff :)
One last thing before we merge. Can you move the readline-cli stuff into the readline folder of the samples and add a short README that tells you how to run this? Basically go run the "server" first and then run the "client".
I want our samples to be fool proof :) and I want one folder per sample, that is why I want the folders to be merged :)

Thanks for the PR!

[activey]

Just merged the sample directories and added small readme doc :)