Added support to open created pastes in browser

This fixes #4.

README.org

@@ -68,6 +68,20 @@ Example:
 Can also be put in the =:config= section of =use-package= the same way as the
 provider definitions above.
 
+*** Open recently created pastes in browser
+To enable opening of recently created pastes in an external browser, you can
+enable the option =webpaste/open-in-browser= by setting this value to a
+non-nil value.
+
+Example:
+#+begin_src emacs-lisp :tangle yes
+  ;; Open recently created pastes in an external browser
+  (setq webpaste/open-in-browser t)
+#+end_src
+
+Can also be put in the =:config= section of =use-package= the same way as the
+provider definitions above.
+
 ** TODO Providers to implement [6/10]
  - [X] ptpb.pw
  - [X] ix.io

webpaste.el

@@ -58,6 +58,13 @@ default to all providers in order defined in ‘webpaste-providers’ list."
   "Prompt for a yes/no confirmation before attempting to paste a region or buffer."
   :group 'webpaste)
 
+
+(defcustom webpaste/open-in-browser nil
+  "Open recently created pastes in a browser.
+
+This uses `browse-url-generic' to open URLs."
+  :group 'webpaste)
+
 
 
 (defvar webpaste/tested-providers ()
@@ -369,6 +376,10 @@ return it to the user."
   ;; Reset tested providers after successful paste
   (setq webpaste/tested-providers nil)
 
+  ;; If the user want to open the link in an external browser, do so.
+  (when webpaste/open-in-browser
+    (browse-url-generic returned-url))
+
   ;; Add RETURNED-URL to killring for easy pasting
   (kill-new returned-url)