Enable customizing query prompt
Update README.md
Merge pull request #135 from k0kubun/query_prompt

Enable customizing query prompt
Rip and adapt koron/gelatin for our purposes
Very crude hook-up of keymap to ahocorasick keyseq
Still various stuff broken, but konami command kinda works
Tweak AcceptKey function

Now the functin properly handles unmatched sequences, and does the what
the original keybinding was supposed to do instead of doing... nothing