Bump Ruby 2.3.3

.ruby-version

@@ -1 +1 @@
-2.3.1
+2.3.3

Dockerfile

@@ -1,5 +1,5 @@
 
-FROM ruby:2.3.1
+FROM ruby:2.3.3
 MAINTAINER Conor Heine <conor.heine@gmail.com>
 
 RUN apt-get update

Gemfile

@@ -1,5 +1,5 @@
 source 'https://rubygems.org'
-ruby '2.3.1'
+ruby '2.3.3'
 
 gem 'rake'
 gem 'thor'

Gemfile.lock

@@ -130,7 +130,7 @@ DEPENDENCIES
   yajl-ruby
 
 RUBY VERSION
-   ruby 2.3.1p112
+   ruby 2.3.3p222
 
 BUNDLED WITH
-   1.13.2
+   1.13.6

README.md

@@ -20,7 +20,7 @@ Unless you wish to contribute to the project, I recommend using the hosted versi
 
 DevDocs is made of two pieces: a Ruby scraper that generates the documentation and metadata, and a JavaScript app powered by a small Sinatra app.
 
-DevDocs requires Ruby 2.3.1, libcurl, and a JavaScript runtime supported by [ExecJS](https://github.com/rails/execjs#readme) (included in OS X and Windows; [Node.js](https://nodejs.org/en/) on Linux). Once you have these installed, run the following commands:
+DevDocs requires Ruby 2.3.3, libcurl, and a JavaScript runtime supported by [ExecJS](https://github.com/rails/execjs#readme) (included in OS X and Windows; [Node.js](https://nodejs.org/en/) on Linux). Once you have these installed, run the following commands:
 
 ```
 git clone https://github.com/Thibaut/devdocs.git && cd devdocs