Test support of ruby 2.6.0

Author: pitbulk

.travis.yml

@@ -9,6 +9,7 @@ rvm:
   - 2.3.0
   - 2.4.0
   - 2.5.0
+  - 2.6.0
   - ree
   - jruby-1.7.27
   - jruby-9.1.17.0
@@ -40,5 +41,7 @@ matrix:
       gemfile: gemfiles/nokogiri-1.5.gemfile
     - rvm: 2.5.0
       gemfile: gemfiles/nokogiri-1.5.gemfile
+    - rvm: 2.6.0
+      gemfile: gemfiles/nokogiri-1.5.gemfile
 env:
   - JRUBY_OPTS="--debug"

README.md

@@ -106,6 +106,7 @@ We created a demo project for Rails4 that uses the latest version of this librar
 * 2.3.x
 * 2.4.x
 * 2.5.x
+* 2.6.x
 * JRuby 1.7.19
 * JRuby 9.0.0.0
 * JRuby 9.2.0.0