README.md in stripe_event-1.5.0 vs README.md in stripe_event-1.5.1

@@ -1,8 +1,14 @@
 # StripeEvent
-[![Build Status](https://secure.travis-ci.org/integrallis/stripe_event.svg)](http://travis-ci.org/integrallis/stripe_event) [![Dependency Status](https://gemnasium.com/integrallis/stripe_event.svg)](https://gemnasium.com/integrallis/stripe_event) [![Gem Version](https://badge.fury.io/rb/stripe_event.svg)](http://badge.fury.io/rb/stripe_event) [![Code Climate](https://codeclimate.com/github/integrallis/stripe_event.svg)](https://codeclimate.com/github/integrallis/stripe_event) [![Coverage Status](https://coveralls.io/repos/integrallis/stripe_event/badge.svg)](https://coveralls.io/r/integrallis/stripe_event)
 
+[![Build Status](https://secure.travis-ci.org/integrallis/stripe_event.svg)](http://travis-ci.org/integrallis/stripe_event)
+[![Dependency Status](https://gemnasium.com/integrallis/stripe_event.svg)](https://gemnasium.com/integrallis/stripe_event)
+[![Gem Version](https://badge.fury.io/rb/stripe_event.svg)](http://badge.fury.io/rb/stripe_event)
+[![Code Climate](https://codeclimate.com/github/integrallis/stripe_event.svg)](https://codeclimate.com/github/integrallis/stripe_event)
+[![Coverage Status](https://coveralls.io/repos/integrallis/stripe_event/badge.svg)](https://coveralls.io/r/integrallis/stripe_event)
+[![Gem Downloads](https://img.shields.io/gem/dt/stripe_event.svg)](https://rubygems.org/gems/stripe_event)
+
 StripeEvent is built on the [ActiveSupport::Notifications API](http://api.rubyonrails.org/classes/ActiveSupport/Notifications.html). Incoming webhook requests are authenticated by [retrieving the event object](https://stripe.com/docs/api?lang=ruby#retrieve_event) from Stripe. Define subscribers to handle specific event types. Subscribers can be a block or an object that responds to `#call`.
 
 ## Install
 
 ```ruby
@@ -17,11 +23,11 @@
 
 ## Usage
 
 ```ruby
 # config/initializers/stripe.rb
-Stripe.api_key = ENV['STRIPE_API_KEY'] # Set your api key
+Stripe.api_key = ENV['STRIPE_SECRET_KEY'] # e.g. sk_live_1234
 
 StripeEvent.configure do |events|
   events.subscribe 'charge.failed' do |event|
     # Define subscriber behavior based on the event object
     event.class       #=> Stripe::Event
@@ -145,11 +151,11 @@
 ```ruby
 require 'json'
 require 'sinatra'
 require 'stripe_event'
 
-Stripe.api_key = ENV['STRIPE_API_KEY']
+Stripe.api_key = ENV['STRIPE_SECRET_KEY']
 
 StripeEvent.subscribe 'charge.failed' do |event|
   # Look ma, no Rails!
 end
 
@@ -197,9 +203,13 @@
 * [Ryan McGeary](https://github.com/rmm5t)
 * [Pete Keen](https://github.com/peterkeen)
 * [Danny Whalen](https://github.com/invisiblefunnel)
 
 Special thanks to all the [contributors](https://github.com/integrallis/stripe_event/graphs/contributors).
+
+### Versioning
+
+Semantic Versioning 2.0 as defined at <http://semver.org>.
 
 ### License
 
 [MIT License](https://github.com/integrallis/stripe_event/blob/master/LICENSE.md). Copyright 2012-2015 Integrallis Software.