Add cask file.

Cask

@@ -0,0 +1,14 @@
+(source melpa)
+
+(package "xwidget-plus" "0.1" "xwidget-webkit enhancement.")
+(package-file "xwidget-plus.el")
+
+(development
+ (depends-on "ert-runner"
+             :git "https://github.com/canatella/ert-runner.el"
+             :branch "win-fix"
+             :files (:defaults ("reporters" "reporters/*") ("bin" "bin/*")))
+ (depends-on "ert-async")
+ (depends-on "with-simulated-input")
+ (depends-on "ivy")
+ (depends-on "helm"))