Gemfile in imgkit-1.5.0 vs Gemfile in imgkit-1.6.0

@@ -6,8 +6,7 @@
   gem "rake"
   gem "rspec", "~> 2"
   gem "rspec-core", "~> 2"
   gem "mocha"
   gem "rack"
-  gem "ruby-debug19", :platforms => :mri_19
-  gem "ruby-debug", :platforms => :mri_18
+  gem 'wkhtmltoimage-binary'
 end