Merge pull request #424 from rolandwalker/three_casks_to_app_stanza

Convert three casks to new `app` stanza

Casks/clipmenu-dev.rb

@@ -5,5 +5,5 @@ class ClipmenuDev < Cask
   url 'http://dl.dropbox.com/u/1140644/clipmenu/ClipMenu_0.4.4a12.zip'
   homepage 'http://www.clipmenu.com/'
 
-  link 'ClipMenu.app'
+  app 'ClipMenu.app'
 end

Casks/dash-beta.rb

@@ -5,5 +5,5 @@ class DashBeta < Cask
   url 'https://dl0tgz6ee3upo.cloudfront.net/production/app/builds/002/042/895/original/620a14dce3c435dc9f9d23e57d8ae668/Dash_Beta.app.zip'
   homepage 'http://kapeli.com/dash'
 
-  link 'Dash Beta.app'
+  app 'Dash Beta.app'
 end

Casks/webstorm-eap.rb

@@ -5,5 +5,5 @@ class WebstormEap < Cask
   url 'http://download-cf.jetbrains.com/webstorm/WebStorm-EAP-138.1988.dmg'
   homepage 'http://confluence.jetbrains.com/display/WI/WebStorm+9+EAP'
 
-  link 'Webstorm 9 EAP.app'
+  app 'Webstorm 9 EAP.app'
 end