Update connector.xml

configurable config.php path
Update AbstractConnector.php

configurable config.php path
Update README.md
Update README.md
Update README.md

instruction for authentication
Update AbstractConnector.php

added a new define for authentication
Update AbstractConnector.php
Update AbstractConnector.php
Update AbstractConnector.php
added new argument

set as a parameter in config.yml
use custom CheckAuthentication
Update config.php
Update README.md
editted readme
Merge pull request #24 from maryrupal/master

Configurable config.path for authentication