[Add] add .gitignore file
[Add] add .gitignore file

bigdig/vnpy,andrewchenshx/vnpy,bigdig/vnpy,msincenselee/vnpy,andrewchenshx/vnpy,msincenselee/vnpy,andrewchenshx/vnpy,vnpy/vnpy,andrewchenshx/vnpy,vnpy/vnpy,msincenselee/vnpy,andrewchenshx/vnpy,bigdig/vnpy,bigdig/vnpy,msincenselee/vnpy