Updates Travis to use ruby 2.6.0 (#311)

- updates dependencies

Author: LeFnord

.travis.yml

@@ -7,24 +7,23 @@ before_install:
   - gem install bundler
 
 after_success:
-  - coveralls
+  # - coveralls
   - bundle exec danger
 
 rvm:
-  - 2.5.0
-  - 2.4.3
+  - 2.4.5
+  - 2.5.3
+  - 2.6.0
 
 matrix:
   fast_finish: true
 
   include:
-    - rvm: 2.3.6
+    - rvm: 2.3.8
     - rvm: ruby-head
     - rvm: jruby-head
-    - rvm: rbx-2
 
   allow_failures:
-    - rvm: 2.3.6
+    - rvm: 2.3.8
     - rvm: ruby-head
     - rvm: jruby-head
-    - rvm: rbx-2

Gemfile

@@ -5,11 +5,11 @@ source 'http://rubygems.org'
 gemspec
 
 group :development, :test do
-  gem 'rubocop', '~> 0.51', require: false
+  gem 'rubocop', '~> 0.61', require: false
 end
 
 group :test do
-  gem 'coveralls', require: false
+  gem 'coveralls_reborn', require: false
   gem 'growl'
   gem 'guard'
   gem 'guard-bundler'