Merge branch 'master' into rashid/logging-for-audience

Author: rashidsp

.travis.yml

@@ -7,6 +7,7 @@ rvm:
  - 2.3.7
  - 2.4.4
  - 2.5.1
+ - 2.6.0
 before_install:
  - gem update --system
  - gem install bundler

optimizely-sdk.gemspec

@@ -20,7 +20,7 @@ Gem::Specification.new do |spec|
  spec.add_development_dependency 'coveralls'
  spec.add_development_dependency 'rake'
  spec.add_development_dependency 'rspec'
- spec.add_development_dependency 'rubocop', '~> 0.60.0'
+ spec.add_development_dependency 'rubocop', '~> 0.62'
  spec.add_development_dependency 'webmock'
 
  spec.add_runtime_dependency 'httparty', '~> 0.11'