Update TODO

Signed-off-by: apporc <appleorchard2000@gmail.com>
use pkg_resources and find_packages with git

1. Use pkg_resources to get file path now.
2. Remove MANIFEST.in, use find_packages() and include_package_date to collect all package/data files.
   Don't forget to install setuptools-git, or find_packages() won't follow files tracked by git.

Signed-off-by: apporc <appleorchard2000@gmail.com>