fix byebug version fo travis ci

Author: senid231

Gemfile

@@ -11,5 +11,5 @@ gem 'addressable', '~> 2.2'
 gem "codeclimate-test-reporter", group: :test, require: nil
 
 group :development, :test do
-  gem 'byebug', platforms: [:mri_20, :mri_21, :mri_22]
+  gem 'byebug', '~> 10.0', platforms: [:mri_20, :mri_21, :mri_22]
 end