Prepare for 3.1.1 release

Author: twalpole

History.md

@@ -1,5 +1,5 @@
 # Version 3.1.1
-Release date: unreleased
+Release date: 2018-05-25
 
 ### Fixes
 

README.md

@@ -7,7 +7,7 @@
 [![Gitter](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/jnicklas/capybara?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
 
 **Note** You are viewing the README for the development version of Capybara.  If you are using the current release version
-you can find the README at https://github.com/teamcapybara/capybara/blob/3.0_stable/README.md
+you can find the README at https://github.com/teamcapybara/capybara/blob/3.1_stable/README.md
 
 
 Capybara helps you test web applications by simulating how a real user would

lib/capybara/version.rb

@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module Capybara
-  VERSION = '3.1.0'.freeze
+  VERSION = '3.1.1'.freeze
 end