fix: travis build needs the Rust source in dist

package.json

@@ -12,7 +12,7 @@
     "clean": "rimraf docs dist dist-web coverage .nyc_output logs pacts jscpd.json && neon clean -p src/v3",
     "coverage": "nyc report --reporter=text-lcov | coveralls",
     "deploy:prepare": "./scripts/create_npmrc_file.sh",
-    "dist": "npm run compile && webpack --config ./config/webpack.web.config.js",
+    "dist": "npm run compile && webpack --config ./config/webpack.web.config.js && cp -r src/v3/native dist/src/v3/native",
     "jscpd": "jscpd -p src -r json -o jscpd.json",
     "lint": "npm run lint:prettier:ts && npm run lint:prettier:js #&& tslint -c tslint.json '{src,test,examples}/**/*.ts' -e '**/node_modules/**/*.ts'",
     "lint:fix": "prettier --parser typescript --write \"{src,test,examples}/**/*.ts\" && prettier --write \"{src,test,examples}/**/*.js\"",