Snowflake LICENSE file is in Docs\snowflake, while others are in Docs\Licenses\PluggableTransports

Someone reported on the blog that the Snowflake LICENSE file is in directory TorBrowser/Docs while other licenses files are in TorBrowser/Docs/Licenses/PluggableTransports/LICENSE: https://blog.torproject.org/comment/284257#comment-284257

An other comment is mentioning that the Reproducible build with TBB line in the README can now be checked.