Faker:
 npm i --save-dev faker@4.1.0

 Body Parser:
 npm i --save body-parser@1.18.2

 Sequelize:
 sudo npm i -g sequelize-cli@4.0.0
 npm i --save sequelize@4.32.6 pg@7.4.1 pg-hstore@2.3.2

Express Validator:
npm i --save express-validator@5.0.2

Express Flash:
npm i --save express-session@1.15.6 express-flash@0.0.2