Merge pull request #17 from workgena/travis_active_admin_14

Update .travis.yml with ActiveAdmin 1.4.0 release

Author: workgena

.travis.yml

@@ -12,7 +12,7 @@ env:
     - RAILS=5.1.6 AA=1.1.0
     - RAILS=5.1.6 AA=1.2.1
     - RAILS=5.2.1 AA=1.3.1
-    - RAILS=5.2.1 AA=1-4-stable
+    - RAILS=5.2.1 AA=1.4.0
 
 rvm:
   - 2.3

Gemfile

@@ -5,11 +5,7 @@ gemspec
 
 group :test do
   gem 'rails', "#{ENV['RAILS'] || '5.2.1'}"
-  if ENV['AA'] == '1-4-stable'
-    gem 'activeadmin', git: 'https://github.com/activeadmin/activeadmin.git', branch: '1-4-stable'
-  else
-    gem 'activeadmin', "#{ENV['AA'] || '1.3.1'}"
-  end
+  gem 'activeadmin', "#{ENV['AA'] || '1.3.1'}"
 
   gem 'rspec-rails'
   gem 'sqlite3'