GEM remote: https://rubygems.org/ specs: activesupport (5.1.2) concurrent-ruby (~> 1.0, >= 1.0.2) i18n (~> 0.7) minitest (~> 5.1) tzinfo (~> 1.1) backports (3.8.0) better_errors (2.1.1) coderay (>= 1.0.0) erubis (>= 2.6.6) rack (>= 0.9.0) browser (2.4.0) coderay (1.1.1) coffee-script (2.4.1) coffee-script-source execjs coffee-script-source (1.12.2) concurrent-ruby (1.0.5) daemons (1.2.4) erubi (1.6.1) erubis (2.7.0) ethon (0.10.1) ffi (>= 1.3.0) eventmachine (1.2.3) execjs (2.7.0) exifr (1.3.1) ffi (1.9.18) fspath (3.1.0) highline (1.7.8) html-pipeline (2.6.0) activesupport (>= 2) nokogiri (>= 1.4) i18n (0.8.4) image_optim (0.25.0) exifr (~> 1.2, >= 1.2.2) fspath (~> 3.0) image_size (~> 1.5) in_threads (~> 1.3) progress (~> 3.0, >= 3.0.1) image_optim_pack (0.5.0.20170712) fspath (>= 2.1, < 4) image_optim (~> 0.19) image_size (1.5.0) in_threads (1.4.0) method_source (0.8.2) mini_portile2 (2.2.0) minitest (5.10.2) multi_json (1.12.1) mustermann (1.0.0) nokogiri (1.8.0) mini_portile2 (~> 2.2.0) options (2.3.2) progress (3.3.1) progress_bar (1.1.0) highline (~> 1.6) options (~> 2.3.0) pry (0.10.4) coderay (~> 1.1.0) method_source (~> 0.8.1) slop (~> 3.4) rack (2.0.3) rack-protection (2.0.0) rack rack-test (0.6.3) rack (>= 1.0) rake (12.0.0) rr (1.2.0) sass (3.4.24) sinatra (2.0.0) mustermann (~> 1.0) rack (~> 2.0) rack-protection (= 2.0.0) tilt (~> 2.0) sinatra-contrib (2.0.0) backports (>= 2.0) multi_json mustermann (~> 1.0) rack-protection (= 2.0.0) sinatra (= 2.0.0) tilt (>= 1.3, < 3) slop (3.6.0) sprockets (3.7.1) concurrent-ruby (~> 1.0) rack (> 1, < 3) sprockets-helpers (1.2.1) sprockets (>= 2.2) thin (1.7.1) daemons (~> 1.0, >= 1.0.9) eventmachine (~> 1.0, >= 1.0.4) rack (>= 1, < 3) thor (0.19.4) thread_safe (0.3.6) tilt (2.0.7) tty-pager (0.7.1) tty-screen (~> 0.5.0) tty-which (~> 0.3.0) verse (~> 0.5.0) tty-screen (0.5.0) tty-which (0.3.0) typhoeus (1.1.2) ethon (>= 0.9.0) tzinfo (1.2.3) thread_safe (~> 0.1) uglifier (3.2.0) execjs (>= 0.3.0, < 3) unicode-display_width (1.1.3) unicode_utils (1.4.0) unix_utils (0.0.15) verse (0.5.0) unicode-display_width (~> 1.1.0) unicode_utils (~> 1.4.0) yajl-ruby (1.3.0) PLATFORMS ruby DEPENDENCIES activesupport (~> 5.0) better_errors browser coffee-script erubi html-pipeline image_optim image_optim_pack minitest nokogiri progress_bar pry (~> 0.10.0) rack rack-test rake rr sass sinatra sinatra-contrib sprockets sprockets-helpers thin thor tty-pager typhoeus uglifier unix_utils yajl-ruby RUBY VERSION ruby 2.4.1p111 BUNDLED WITH 1.14.1