Add a history endpoint

- A very basic history endpoint as described in the issue rodolfobandeira#39
- Doesn't yet support all the filters that are described in the documentation provided here https://documenter.getpostman.com/view/2025350/RWaEzAiG#9f1dfdc0-fbe8-4ae5-9209-7f3d649a627c
- Allows retrieving all the historical events or a specific historical event by passing an id
- This closes rodolfobandeira#39 when merged in.

Notes:
- Also decided to alphabetize the order in which we `require` the files in the `spacex.rb` file

CHANGELOG.md

@@ -1,9 +1,9 @@
 ### 1.0.1 (next)
+* [#45](https://github.com/rodolfobandeira/spacex/pull/45): Implement History endpoint [@invacuo](http://github.com/invacuo).
 
 * Your contribution here.
 
 ### 1.0.0 (2018/10/15)
-
 * [#41](https://github.com/rodolfobandeira/spacex/pull/41): General Refactor cleaning endpoint classes [@invacuo](http://github.com/invacuo).
 * [#44](https://github.com/rodolfobandeira/spacex/pull/44): Add flickr_images key into rockets endpoint [@Dfenniak](https://github.com/Dfenniak).
 * [#42](https://github.com/rodolfobandeira/spacex/pull/42): Add pry gem to debug - [@Dfenniak](https://github.com/Dfenniak).

lib/spacex.rb

@@ -4,13 +4,14 @@
 require 'hashie'
 
 require_relative 'spacex/base_request'
-require_relative 'spacex/version'
-require_relative 'spacex/launches'
+require_relative 'spacex/capsules'
 require_relative 'spacex/company_info'
-require_relative 'spacex/roadster'
+require_relative 'spacex/cores'
 require_relative 'spacex/dragon_capsules'
-require_relative 'spacex/ships'
+require_relative 'spacex/history'
+require_relative 'spacex/launches'
 require_relative 'spacex/missions'
+require_relative 'spacex/roadster'
 require_relative 'spacex/rockets'
-require_relative 'spacex/capsules'
-require_relative 'spacex/cores'
+require_relative 'spacex/ships'
+require_relative 'spacex/version'

lib/spacex/history.rb

@@ -0,0 +1,7 @@
+module SPACEX
+  module History
+    def self.info(id = nil)
+      SPACEX::BaseRequest.info("history/#{id}")
+    end
+  end
+end