use meteor npm on travis

.travis.yml

@@ -47,25 +47,25 @@ before_script:
   echo "  replSetName: \"rs0\"" | sudo tee -a /etc/mongod.conf
 - sudo service mongod restart
 - mkdir /tmp/build
-- travis_retry npm install
+- travis_retry meteor npm install
 - |-
   mongo --eval 'rs.initiate({_id:"rs0", members: [{"_id":1, "host":"localhost:27017"}]})'
-- npm run lint
-- npm run stylelint
+- meteor npm run lint
+- meteor npm run stylelint
 - travis_retry meteor build --headless /tmp/build
 - mkdir /tmp/build-test
 - tar -xf /tmp/build/Rocket.Chat.tar.gz -C /tmp/build-test/
 - cd /tmp/build-test/bundle/programs/server
-- npm install -g node-gyp node-pre-gyp
-- npm install
+- meteor npm install -g node-gyp node-pre-gyp
+- meteor npm install
 - cd -
 - mongo --eval 'rs.status()'
 - mongo meteor --eval 'db.getCollectionNames()'
 script:
-- travis_retry npm test
+- travis_retry meteor npm test
 - mongo meteor --eval 'db.dropDatabase()'
 - unset MONGO_OPLOG_URL
-- travis_retry npm test
+- travis_retry meteor npm test
 before_deploy:
 - source ".travis/setartname.sh"
 - source ".travis/setdeploydir.sh"