Test against Ruby 2.5 (#57)

Merge pull request 57

Author: jekyllbot

.travis.yml

@@ -6,17 +6,16 @@ notifications:
 branches:
   only:
     - master
-
 rvm:
+  - 2.5
   - 2.4
   - 2.3
   - 2.2
-  - 2.1
 env:
   - ""
-  - JEKYLL_VERSION=3.6.2
+  - JEKYLL_VERSION=3.7.0
 matrix:
   include:
     - # GitHub Pages
-      rvm: 2.4.0
+      rvm: 2.4
       env: GH_PAGES=true

jekyll-gist.gemspec

@@ -26,6 +26,6 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency "jekyll", ">= 3.0"
   spec.add_development_dependency "rake"
   spec.add_development_dependency "rspec"
-  spec.add_development_dependency "rubocop", "~> 0.51"
+  spec.add_development_dependency "rubocop", "0.51"
   spec.add_development_dependency "webmock"
 end