Made changes to README.md

Made changes to README.md

Added ESLint, linted files

Moved schema.sql into db folder, added seeds.sql

Edited README.md

Updated README.md

Added preview gifs to README.md

Updated README.md

Dryed up ask methods, change customer sql statement

Added sql join statement in supervisor.js

Added inquirer questions and validation for createDepartment method

Added schema for departments table

Added supervisor.js and initial inquirer question

Implemented create product method that insert row into db

Worked on createProduct and related methods in manager.js