Use the Travis build artifact for deployment

.travis.yml

@@ -14,12 +14,18 @@ env:
   - EB_REGION=us-east-1
   - EB_APP=scratch-www
   - EB_AWS_BUCKET_NAME=elasticbeanstalk-us-east-1-307680192167
+  - SKIP_CLEANUP=true
+  - BUILD_ARCHIVE=$TRAVIS_BUILD_ID.zip
+after_success:
+- zip $BUILD_ARCHIVE .
 deploy:
 - provider: elasticbeanstalk
   access_key_id: $EB_AWS_ACCESS_KEY_ID
   secret_access_key: $EB_AWS_SECRET_ACCESS_KEY
   bucket_name: $EB_AWS_BUCKET_NAME
   bucket_path: $EB_APP
+  zip_file: $BUILD_ARCHIVE
+  skip_cleanup: $SKIP_CLEANUP
   region: $EB_REGION
   app: $EB_APP
   env: scratch-www-staging
@@ -31,6 +37,8 @@ deploy:
   secret_access_key: $EB_AWS_SECRET_ACCESS_KEY
   bucket_name: $EB_AWS_BUCKET_NAME
   bucket_path: $EB_APP
+  zip_file: $BUILD_ARCHIVE
+  skip_cleanup: $SKIP_CLEANUP
   region: $EB_REGION
   app: $EB_APP
   env: scratch-www-production

package.json

@@ -3,7 +3,6 @@
   "version": "1.0.0",
   "description": "Standalone WWW client for Scratch",
   "scripts": {
-    "prestart": "make build",
     "start": "make start",
     "stop": "make stop",
     "test": "make test",