Merge pull request #3 from gyfelton/master

Move tokens and other sensitive information to a ignored file
language resetting
minor change
Merge pull request #5 from franklixuefei/master

language resetting
Separated subscribe event and help command
- added sanitize in eat_what
- fixed spell bug
- added findCommand into 'choose' waitRule
- added '吃啥' into command set
Merge pull request #4 from slovey528/master

Separated subscribe event and help command, new welcome page
updated README.md
Merge pull request #6 from iJuliet/master

updated README.md
update README.md