Add ruby 260 (#843)

* add ruby 2.6.0

* update rubocop

* get rid of bundle update

Author: KazuCocoa

.rubocop.yml

@@ -50,3 +50,5 @@ Naming/MemoizedInstanceVariableName:
   Enabled: false
 Layout/IndentHeredoc:
   Enabled: false
+Layout/RescueEnsureAlignment:
+  Enabled: false

.travis.yml

@@ -2,13 +2,13 @@ sudo: false
 cache: bundler
 language: ruby
 rvm:
-  - 2.2.5
-  - 2.3.3
-  - 2.4.0
-  - 2.5.0
+  - 2.2
+  - 2.3
+  - 2.4
+  - 2.5
+  - 2.6
 
 before_install:
-  - gem update --system
   - gem update bundler
 install:
   - bundle install --retry=3

android_tests/appium.txt

@@ -9,4 +9,4 @@ some_capability = "some_capability"
 
 [appium_lib]
 sauce_username = ""
-sauce_access_key = ""
+sauce_access_key = ""

appium_lib.gemspec

@@ -24,7 +24,7 @@ Gem::Specification.new do |s|
   s.add_development_dependency 'posix-spawn', '~> 0.3'
   s.add_development_dependency 'pry'
   s.add_development_dependency 'rake', '~> 12.0'
-  s.add_development_dependency 'rubocop', '~> 0.60.0'
+  s.add_development_dependency 'rubocop', '~> 0.61.0'
   s.add_development_dependency 'spec', '~> 5.3', '>= 5.3.4'
   s.add_development_dependency 'yard', '~> 0.9.11'