GEM remote: https://rubygems.org/ specs: domain_name (0.5.20170223) unf (>= 0.0.5, < 1.0.0) envyable (1.2.0) thor (>= 0.18.1, < 2.0) http-cookie (1.0.3) domain_name (~> 0.5) mailgun-ruby (1.1.5) rest-client (~> 2.0) mime-types (3.1) mime-types-data (~> 3.2015) mime-types-data (3.2016.0521) mustermann (1.0.0) netrc (0.11.0) puma (3.8.2) rack (2.0.1) rack-protection (2.0.0.rc2) rack rest-client (2.0.1) http-cookie (>= 1.0.2, < 2.0) mime-types (>= 1.16, < 4.0) netrc (~> 0.8) sinatra (2.0.0.rc2) mustermann (= 1.0.0) rack (~> 2.0) rack-protection (= 2.0.0.rc2) tilt (~> 2.0) thor (0.19.4) tilt (2.0.7) unf (0.1.4) unf_ext unf_ext (0.0.7.2) PLATFORMS ruby DEPENDENCIES envyable! mailgun-ruby! puma! sinatra (= 2.0.0.rc2)! BUNDLED WITH 1.13.7