Add some functions?

[zydjohnHotmail]

Hello:
I found your repo, which seems to be a good one, I also want to write such a project, but my JavaScript level is not good enough for a lot of things.
Since I have used MetaMask wallet before, I think if I can add 2 functions just as MetaMask wallet to this repo, then it will be good for testing at least.
The 2 functions I want to add are:

1. Approve
2. Reject
   You see when user wants to switch network or allow transaction, MetaMask will alwasy ask user's approval, if approved, then send the request or transaction, if not approved, then simply reject the request.
   You can give me a general idea on which JavaScript functions can build such functions, may be I can try to add this myself, so I can learn more JavaScript.
   By the way, can I use this repo for other blockchain, if I know the RPC server address?
   Thanks,