Create firefoxdeveloperedition.rb (#3964)

Casks/firefoxdeveloperedition.rb

@@ -0,0 +1,38 @@
+cask 'firefoxdeveloperedition' do
+  version :latest
+  sha256 :no_check
+
+  language 'de' do
+    'de'
+  end
+
+  language 'en', default: true do
+    'en-US'
+  end
+
+  language 'ja' do
+    'ja-JP-mac'
+  end
+
+  language 'ru' do
+    'ru'
+  end
+
+  language 'uk' do
+    'uk'
+  end
+
+  language 'zh-TW' do
+    'zh-TW'
+  end
+
+  language 'zh' do
+    'zh-CN'
+  end
+
+  url "https://download.mozilla.org/?product=firefox-aurora-latest-#{language == 'en-US' ? 'ssl' : 'l10n'}&os=osx&lang=#{language}"
+  name 'Mozilla Firefox Developer Edition'
+  homepage 'https://www.mozilla.org/firefox/developer/'
+
+  app 'FirefoxDeveloperEdition.app'
+end