fixed requires for faraday + typhoeus

[spnkr]

If using typhoeus as the adapter Ethon::Errors::InvalidOption: The option: disable_ssl_peer_verification is invalid. is thrown unless these two requires are added to lib/faraday/*.rb

require 'faraday'
require 'typhoeus' #+
require 'typhoeus/adapters/faraday' #+

by adding these requires (commented out) it is now easier to use typhoeus—all you have to do is uncomment out the requires and change the DEFAULT_ADAPTER to :typhoeus in configuration.rb

this is an implementation of typhoeus/typhoeus#270

[facebook-github-bot]

Thank you for your pull request and welcome to our community. We require contributors to sign our Contributor License Agreement, and we don't seem to have you on file. In order for us to review and merge your code, please sign up at https://code.facebook.com/cla - and if you have received this in error or have any questions, please drop us a line at [email protected]. Thanks!