npm install serverless component on travis

Author: danielcondemarin

.travis.yml

@@ -10,6 +10,7 @@ node_js:
 install:
   - npm install
   - cd packages/serverless-nextjs-plugin && npm install && cd ../../
+  - cd packages/serverless-nextjs-component && npm install && cd ../../
   - cd integration/app-with-serverless-offline && npm install && cd ../../
 script:
   - npm run lint