Update to 3.0.6

Author: kapil2704

.travis.yml

@@ -1,24 +1,43 @@
-language: ruby
-cache: bundler
-rvm:
-  - 1.9.3
-  - 2.0.0
-  - 2.1.0
-  - 2.2.0
-  - 2.2.2
-  - 2.3.0
-gemfile:
-  - gemfiles/rails4.gemfile
-  - gemfiles/rails5.gemfile
-before_install:
-  - gem update bundler
-matrix:
-  exclude:
-    - rvm: 1.9.3
-      gemfile: gemfiles/rails5.gemfile
-    - rvm: 2.0.0
-      gemfile: gemfiles/rails5.gemfile
-    - rvm: 2.1.0
-      gemfile: gemfiles/rails5.gemfile
-    - rvm: 2.2.0
-      gemfile: gemfiles/rails5.gemfile
+language: ruby
+cache: bundler
+rvm:
+  - 1.9.3
+  - 2.0.0
+  - 2.1.0
+  - 2.2.0
+  - 2.2.2
+  - 2.3.0
+  - 2.4.0
+  - 2.5.0
+gemfile:
+  - gemfiles/rails4.gemfile
+  - gemfiles/rails5.gemfile
+  - gemfiles/rails6.gemfile
+before_install:
+  - gem update bundler
+matrix:
+  exclude:
+    - rvm: 1.9.3
+      gemfile: gemfiles/rails5.gemfile
+    - rvm: 1.9.3
+      gemfile: gemfiles/rails6.gemfile
+    - rvm: 2.0.0
+      gemfile: gemfiles/rails5.gemfile
+    - rvm: 2.0.0
+      gemfile: gemfiles/rails6.gemfile
+    - rvm: 2.1.0
+      gemfile: gemfiles/rails5.gemfile
+    - rvm: 2.1.0
+      gemfile: gemfiles/rails6.gemfile
+    - rvm: 2.2.0
+      gemfile: gemfiles/rails5.gemfile
+    - rvm: 2.2.0
+      gemfile: gemfiles/rails6.gemfile
+    - rvm: 2.2.2
+      gemfile: gemfiles/rails6.gemfile
+    - rvm: 2.3.0
+      gemfile: gemfiles/rails6.gemfile
+    - rvm: 2.4.0
+      gemfile: gemfiles/rails6.gemfile
+    - rvm: 2.5.0
+      gemfile: gemfiles/rails6.gemfile