Add deploy rule

Author: piroor

.travis.yml

@@ -12,4 +12,15 @@ before_script:
   - make install_extlib
 script:
   - make lint
-
+before_deploy:
+  - make
+deploy:
+  provider: releases
+  api_key:
+    secure: "hr00ssQU0P4AHVkqrl1ZzkzhWe0zUTJIMD9R828Tu2qrA4syzCqsTvXkaELhMoR/xwQwJFl4E5OoUAziwkpOWE2kd8vQ1//ltv+TqrjjnZx+y+M8qw5CqcvYyPjqEAruyeibtTULk8L7ktTYvu6Q3LjKIVXCjZI43TmLTwzZ/9c="
+  file:
+    - treestyletab-we.xpi
+  skip_cleanup: true
+  on:
+    repo: piroor/treestyletab
+    tags: true