several changes
- table configuration can now be one automatically be simply providing a configuration.json file and then creating a RelationsConfigurator with it
- created a demoConfig.json accordingly
- updated TableRelation and TableRelationManager to allow for chained function calls for relation creation
- removed now obsolete code
Merge branch 'master' of https://github.com/TPei/node-mysql-relation-manager

Conflicts:
	package.json