Update minimum required Ruby version to 2.2.6.

.ruby-version

@@ -1 +1 @@
-2.2.5
+2.2.6

.travis.yml

@@ -1,6 +1,6 @@
 language: ruby
 rvm:
-  - 2.2.5
+  - 2.2.6
 before_install:
   - npm install -g svgo
 notifications:

CONTRIBUTING.md

@@ -11,9 +11,9 @@ I definitely appreciate your interest in (and help improving) svgeez. Thanks!
 
 ## Installation
 
-svgeez is written in [Ruby](https://www.ruby-lang.org/en/) (version 2.2.5) and development dependencies are managed using the [Bundler](http://bundler.io/) gem.
+svgeez is written in [Ruby](https://www.ruby-lang.org/en/) (version 2.2.6) and development dependencies are managed using the [Bundler](http://bundler.io/) gem.
 
-I manage Ruby versions with [rbenv](https://github.com/rbenv/rbenv). I'd recommend you do the same or use a similar Ruby version manager ([chruby](https://github.com/postmodern/chruby/) or [RVM](https://rvm.io/) come to mind). Once you've installed Ruby 2.2.5 using your method of choice, install the project's gems by running:
+I manage Ruby versions with [rbenv](https://github.com/rbenv/rbenv). I'd recommend you do the same or use a similar Ruby version manager ([chruby](https://github.com/postmodern/chruby/) or [RVM](https://rvm.io/) come to mind). Once you've installed Ruby 2.2.6 using your method of choice, install the project's gems by running:
 
 ```sh
 bundle install

README.md

@@ -19,16 +19,16 @@ _For more on why SVG sprites are the bee's knees as far as icon systems go, give
 
 ## Getting Started
 
-Before installing and using svgeez, you'll want to have Ruby 2.2.5 installed on your computer. There are plenty of ways to go about this, but my preference is [rbenv](https://github.com/sstephenson/rbenv). If you're developing on a Mac and using [Homebrew](http://brew.sh/), installing rbenv is [super easy](https://github.com/sstephenson/rbenv#homebrew-on-mac-os-x).
+Before installing and using svgeez, you'll want to have Ruby 2.2.6 installed on your computer. There are plenty of ways to go about this, but my preference is [rbenv](https://github.com/sstephenson/rbenv). If you're developing on a Mac and using [Homebrew](http://brew.sh/), installing rbenv is [super easy](https://github.com/sstephenson/rbenv#homebrew-on-mac-os-x).
 
-svgeez _might_ work with other versions of Ruby, but it's developed in 2.2.5.
+svgeez _might_ work with other versions of Ruby, but it's developed in 2.2.6.
 
 ## Installation
 
 If you're using Bundler, add svgeez to your project's Gemfile:
 
 ```rb
-ruby '2.2.5'
+ruby '2.2.6'
 
 source 'https://rubygems.org' do
   gem 'svgeez'

lib/svgeez/version.rb

@@ -1,3 +1,3 @@
 module Svgeez
-  VERSION = '1.0.1'.freeze
+  VERSION = '1.0.2'.freeze
 end

svgeez.gemspec

@@ -4,7 +4,7 @@ $LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
 require 'svgeez/version'
 
 Gem::Specification.new do |spec|
-  spec.required_ruby_version = '>= 2.2.5'
+  spec.required_ruby_version = '>= 2.2.6'
 
   spec.name          = 'svgeez'
   spec.version       = Svgeez::VERSION