updating to minitest 5.2.2
reorganizing files
moving development dependencies to Gemfile
updating README
adding simplecov
adding code climate badge
switching Experiments to Verdict in rake file
skipping code coverage for rubinius
adding 2.1.0 to the testing matrix
moving dependencies back into Gemfile
fixing filenames for segmenters and storage providers
elaborating on storage vs. logging for the README
updating README install section
Merge pull request #5 from Shopify/update_dependencies

A few updates