Revert "Not run extra prod build on simple CI run" - npm runs prebublish on install :(

This reverts commit 74d384086f.

.travis.yml

@@ -31,6 +31,8 @@ before_script:
   - sleep 3 # give server time to start
 after_script:
   - kill %1 # kill e2e server
+before_deploy:
+- npm run build-dist
 deploy:
   - provider: npm
     skip_cleanup: true

package.json

@@ -9,7 +9,6 @@
   "main": "dist/redoc.min.js",
   "scripts": {
     "test": "npm run lint && node ./build/run_tests.js",
-    "prepublish": "npm run build:prod",
     "branch-release": "git reset --hard && branch-release",
     "lint": "tslint -e \"lib/**/*{ngfactory|css.shim}.ts\" lib/**/*.ts",
     "unit": "npm run build:sass && karma start",