Add WebStorm EAP Cask

Casks/webstorm-eap.rb

@@ -0,0 +1,19 @@
+cask :v1 => 'webstorm-eap' do
+  version '140.2167'
+  sha256 'd392bc679ee6c8b7d71e92af8cb46c4996f5541aa73cada84a3294c59e809cc8'
+
+  url "http://download-cf.jetbrains.com/webstorm/WebStorm-EAP-#{version}.dmg"
+  homepage 'https://confluence.jetbrains.com/display/WI/WebStorm+EAP'
+  license :commercial
+
+  app 'WebStorm 10 EAP.app'
+
+  postflight do
+    plist_set(':JVMOptions:JVMVersion', '1.6+')
+  end
+
+  zap :delete => [
+                  '~/Library/Application Support/WebStorm10',
+                  '~/Library/Preferences/WebStorm10',
+                 ]
+end