Ensure support for various versions of Faraday#583

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philsturgeon wants to merge 4 commits intotyphoeus:masterfrom philsturgeon:appraisal

+191-14

Commits on Nov 16, 2017

Use appraisal to ensure support for various versions of faraday.
Phil Sturgeon
committed
Let RVM pick the latest patch of each version
Phil Sturgeon
committed
Only useful jobs in the matrix please
Phil Sturgeon
committed
Travis wasnt running bundle install
Phil Sturgeon
committed