Add OpenBazaar v2.0.11 (#4498)

* Add OpenBazaar v2.0.11

* openbazaar-beta

* Update openbazaar-beta.rb

Casks/openbazaar-beta.rb

@@ -0,0 +1,13 @@
+cask 'openbazaar-beta' do
+  version '2.0.11'
+  sha256 'dabe8ec8d248875f5be8a3188faa53e0974b5a59888b3b5c4bab5dfedd036297'
+
+  # github.com/OpenBazaar/openbazaar-desktop was verified as official when first introduced to the cask
+  url "https://github.com/OpenBazaar/openbazaar-desktop/releases/download/v#{version}/OpenBazaar#{version.major}-#{version}.dmg"
+  appcast 'https://github.com/OpenBazaar/openbazaar-desktop/releases.atom',
+          checkpoint: '148327cc61bb5400b30367d3357f0dc457fe0d818f3aed62bbd494cbb7b3210d'
+  name 'OpenBazaar Beta'
+  homepage 'https://www.openbazaar.org/'
+
+  app "OpenBazaar#{version.major}.app"
+end