Add myself as maintainer
Add myself as maintainer

Well, since I'm currently the maintainer of CodiMD, I should maybe
mentioned in the package.json, just in case someone is willing to
contact me about it.

Signed-off-by: Sheogorath <1c2647ce2ee8a4ec8e5c8b1b245ca38f94844bab@shivering-isles.com>

hackmdio/hackmd,Yukaii/hackmd,jackycute/HackMD,jackycute/HackMD,jackycute/HackMD,Yukaii/hackmd,hackmdio/hackmd,hackmdio/hackmd,Yukaii/hackmd