Pare down build dependency surface area

Author: javan

Gemfile

@@ -1,6 +1,5 @@
 source 'https://rubygems.org'
 
-gem 'rake'
 gem 'sprockets', '3.6.0' # Note: Sprockets > 3.6.0 strips the banners from our dist files
 gem 'sprockets-export'
 gem 'sprockets-svgo'
@@ -11,4 +10,3 @@ gem 'sass'
 gem 'uglifier'
 gem 'blade', '~> 0.7.0'
 gem 'github_api', '~> 0.13.1'
-gem 'aws-sdk'

Gemfile.lock

@@ -7,12 +7,6 @@ GEM
       minitest (~> 5.1)
       tzinfo (~> 1.1)
     addressable (2.4.0)
-    aws-sdk (2.2.8)
-      aws-sdk-resources (= 2.2.8)
-    aws-sdk-core (2.2.8)
-      jmespath (~> 1.0)
-    aws-sdk-resources (2.2.8)
-      aws-sdk-core (= 2.2.8)
     blade (0.7.0)
       activesupport (>= 3.0.0)
       blade-qunit_adapter (~> 2.0.1)
@@ -74,7 +68,6 @@ GEM
     hashie (3.5.6)
     http_parser.rb (0.6.0)
     i18n (0.7.0)
-    jmespath (1.1.3)
     json (2.0.2)
     jwt (1.5.6)
     minitest (5.9.1)
@@ -88,7 +81,6 @@ GEM
       multi_xml (~> 0.5)
       rack (>= 1.2, < 3)
     rack (2.0.8)
-    rake (10.0.4)
     sass (3.4.3)
     sprockets (3.6.0)
       concurrent-ruby (~> 1.0)
@@ -115,13 +107,11 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
-  aws-sdk
   blade (~> 0.7.0)
   coffee-script
   coffee-script-source (~> 1.9.1)
   eco
   github_api (~> 0.13.1)
-  rake
   sass
   sprockets (= 3.6.0)
   sprockets-export

README.md

@@ -15,7 +15,7 @@ Trix sidesteps these inconsistencies by treating `contenteditable` as an I/O dev
 
 ### Built for the Modern Web
 
-<details><summary>Trix supports all evergreen, self-updating desktop and mobile browsers.</summary><img src="https://s3.amazonaws.com/trix-depot/test-status-images/trix.svg"></details>
+<details><summary>Trix supports all evergreen, self-updating desktop and mobile browsers.</summary><img src="https://app.saucelabs.com/browser-matrix/basecamp_trix.svg"></details>
 
 Trix is built with emerging web standards, notably [Custom Elements](https://developer.mozilla.org/en-US/docs/Web/Web_Components/Using_custom_elements), [Mutation Observer](https://dom.spec.whatwg.org/#mutation-observers), and [Promises](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise). Eventually we expect all browsers to implement these standards. In the meantime, Trix includes [polyfills](https://en.wikipedia.org/wiki/Polyfill_(programming)) for missing functionality.