Hello!
Mainly I made this addon for my own usage in RP, because I prefer my Draenei characters to have quite strong accent, while talking in Common, but then I had few people asking for it, because we all loved the addon called Tongues and due to is currently not working - well, this was just temporary solution at least for me.
You can always type /ds in chat to enable/disable the addon's effect.
You can always add and remove words to/from the DraeneiSpeak.lua file.
I'm not an expert in coding and I'm not going to be adding anything more to the addon - so feel free to tweak it to your liking.
Like any addon/mod, just add the mod to the mod folder inside its own folder called DraeneiSpeak, and it should work.