Attempt to fix NPM deployments (#29)

Author: klntsky

.travis.yml

@@ -41,10 +41,9 @@ deploy:
     script:
       - echo 'done'
   - provider: npm
-    api_key:
-      secure: $NPM_API_KEY
     email: [email protected]
     skip_cleanup: true
+    edge: true
     on:
       tags: true
       branch: master