v-prefix support to verify-bintray-upload (#454)
v-prefix support to verify-bintray-upload (#454)

Summary:
muraziz had an unpleasant encounter with the script when using it with
`v0.20.0` instead of `0.20.0`, which would fail, but in a very unhelpful
way.
This strips the prefix if present and also adds some more type safety
which is always nice.
Pull Request resolved: https://github.com/facebook/litho/pull/454

Reviewed By: marco-cova

Differential Revision: D10867311

Pulled By: passy

fbshipit-source-id: f43f1dd0bf0a00802229c0d27b2b9d46b2427dc9

facebook/litho,facebook/litho,facebook/litho,facebook/litho,facebook/litho,facebook/litho