Add change log

Author: darren987469

CHANGELOG.md

@@ -3,7 +3,8 @@
 #### Features
 
 * Your contribution here.
-* [#1795](https://github.com/ruby-grape/grape/pull/1803): Adds the ability to re-mount all endpoints in any location - [@myxoh](https://github.com/bschmeck).
+* [#1813](https://github.com/ruby-grape/grape/pull/1813): Add ruby 2.5 support, drop 2.2. Update rails version in travis - [@darren987469](https://github.com/darren987469).
+* [#1803](https://github.com/ruby-grape/grape/pull/1803): Adds the ability to re-mount all endpoints in any location - [@myxoh](https://github.com/bschmeck).
 * [#1795](https://github.com/ruby-grape/grape/pull/1795): Fix vendor/subtype parsing of an invalid Accept header - [@bschmeck](https://github.com/bschmeck).
 * [#1791](https://github.com/ruby-grape/grape/pull/1791): Support `summary`, `hidden`, `deprecated`, `is_array`, `nickname`, `produces`, `consumes`, `tags` options in `desc` block - [@darren987469](https://github.com/darren987469).