Added release deployment

Author: tsv2013

.travis.yml

@@ -21,7 +21,17 @@ before_script:
 script:
 - npm run build
 
+before_deploy: tar -zcvf surveyjs-widgets.tar.gz package
+
 deploy:
+- provider: releases
+  api_key:
+    secure: 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
+  file:
+  - surveyjs-widgets.tar.gz
+  skip_cleanup: true
+  on:
+    tags: true
 - provider: script
   script: chmod +x ./deploy_npm.sh && ./deploy_npm.sh
   skip_cleanup: true