Update config.yml

Author: aldefouw

.circleci/config.yml

@@ -71,6 +71,7 @@ jobs:
             export NVM_DIR="/opt/circleci/.nvm"
             [ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh"
             nvm use stable
+            npm install
             npm run redcap_rsvc:install
       - run:
           name: Run Tests