switching to npm

Author: Parth Shah

.travis.yml

@@ -1,13 +1,13 @@
 language: node_js
 node_js:
 - 5.5.0
-cache:
-  yarn: true
-  directories:
-    - node_modules
+# cache:
+#   yarn: true
+#   directories:
+#     - node_modules
 
 script:
-- if [ -n "$CLEAN_CACHE" ]; then echo 'Cleaning cache'; yarn cache clean; fi
+- npm cache clean
 - npm run lint && npm test && npm run build
 sudo: false
 addons: