updated atom-beta (1.5.0-beta3)

Casks/atom-beta.rb

@@ -1,11 +1,11 @@
 cask 'atom-beta' do
-  version '1.5.0-beta1'
-  sha256 'd92285bdbcf66cb3c9c19f3d23b262227f5d78e1007704fe16ee6b622a93341f'
+  version '1.5.0-beta3'
+  sha256 'f6302ce5b505e4186d7a0fee41690868eab0dee038bf9926d973c3d1766fb70d'
 
   # github.com is the official download host per the vendor homepage
   url "https://github.com/atom/atom/releases/download/v#{version}/atom-mac.zip"
   appcast 'https://github.com/atom/atom/releases.atom',
-          checkpoint: 'ce646677e7049b0adc3aacf827d010649c52948e32a4d00df973db946f79add4'
+          checkpoint: '8e5c44d6f35060f74bf352ef898fea7c394fea554ac1e89cf33bef3cc9624f1f'
   name 'Github Atom Beta'
   homepage 'https://atom.io/beta'
   license :mit