That way, we can provide better service, as CLIs that consume a lot of
quota can easily have their own app credentials, and with it, their
own quota.
The fallback will be a project that allows to use all possible
google APIs.
The user can always put in his own application secret to use his own
quota or even paid services.
Fixes#80
* keywords are no longer than 20 characters, which is a restriction
cargo imposes
* don't use 'homepage' link in cargo.toml unless the homepage is
non-empty
* Added all publish-results to mark the respective crate version
Related to #46
