Add Makefile for automation (#110)

Author: thinkingserious

Diff for: .rubocop.yml

@@ -43,3 +43,5 @@ Style/ExtraSpacing:
   Enabled: true
   AllowForAlignment: false
   ForceEqualSignAlignment: false
+Style/FrozenStringLiteralComment:
+  Enabled: false

Diff for: LICENSE.txt

@@ -1,6 +1,6 @@
 The MIT License (MIT)
 
-Copyright (c) 2016-2018 SendGrid, Inc.
+Copyright (c) 2016-2020 Twilio SendGrid, Inc.
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

Diff for: Makefile

@@ -0,0 +1,7 @@
+.PHONY: install test
+
+install:
+	gem install minitest
+
+test:
+	rake

Diff for: test/test_ruby_http_client.rb

@@ -278,7 +278,7 @@ def test_use_cases_exists
   end
 
   def test_license_date_is_updated
-    license_end_year = IO.read('LICENSE.txt').match(/Copyright \(c\) 2016-(\d{4}) SendGrid/)[1].to_i
+    license_end_year = IO.read('LICENSE.txt').match(/Copyright \(c\) 2016-(\d{4}) Twilio SendGrid/)[1].to_i
     current_year = Time.new.year
     assert_equal(current_year, license_end_year)
   end