Dotenv DB credentials

updated to now read DB credentials from a .env file - see README and associated example project

updated README

updated README properly
also added methods to DatabaseTableRepository (see README for usage):

• deleteAll()
• dropTable()
• createTable($sql = null)

Stable and simplified

default constructor
DB table name singular, lowercase version of Entity class name

updated README for auto increment ID assumption

v0.9.1

Update README.md

minor fixes

v0.9

changed hardcoded 'dvds' for dynamic table name

another try

0.8

ready for packagist

read for student testing

0.7

fixed wildcard search