Add mapping for query fields containing underscores to properties with the same name without underscores

Example:
Database field "Customer_ID" is now mapped to class property/field "CustomerID" (case insensitive)
Merge pull request #90 from CaioProiete/fb-enable-mapping-of-db-fields-with-underscores

Add mapping for query fields containing underscores to properties with the same name without underscores