It's possible to do this without needing a PR or any modification to the library using a key rename function. Simply add your commands in object format - e.g.;

var commands = {
	"Where am I?"		:	myLocationFunction,
	"What's the time?"	:	myTimeFunction,
};

Then, add the following rename function;

var rename = function(obj, prefix){
	if(typeof obj !== 'object' || !obj){
		return false;
	}
	var keys = Object.keys(obj),
		keysLen = keys.length,
		prefix = prefix || '';
	for(var i=0; i<keysLen ;i++){
		obj[prefix+keys[i]] = obj[keys[i]];
		if(typeof obj[keys[i]]=== 'object'){
			rename(obj[prefix+keys[i]],prefix);
		}
		delete obj[keys[i]];
	}
	return obj;
};

Usage is as follows;
rename(commands, "Hello Annyang ");

I'd recommend adding a space on the end of your prefix (in this case, "Hello Annyang ". After that, simply call;

annyang.addCommands(commands);
annyang.start();

If you console.log(commands) after calling rename, you'll see it's prefixed all your commands with your specified prefix.

Allow defining a command prefix #18

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