ci: deploy dev branch to npm

Author: mvines

.travis.yml

@@ -45,7 +45,7 @@ deploy:
     script:
       - npx semantic-release
     on:
-      branch: master
+      branch: dev
       node_js: "lts/*"
   - provider: releases
     skip-cleanup: true

package.json

@@ -17,7 +17,11 @@
     "url": "http://github.com/solana-labs/solana-web3.js.git/issues"
   },
   "publishConfig": {
-    "access": "public"
+    "access": "public",
+    "tag": "dev"
+  },
+  "release": {
+    "branch": "dev"
   },
   "main": "lib/index.cjs.js",
   "module": "lib/index.esm.js",