Partial support for dymola ModelDescription.xml files

it needs more examples to ensure full support

TODO
·  Transfer of input / output values and parameters:
	test fmiSetBoolean
	test fmiSetString
	test and implement fmiSetRealInputDerivatives
	test and implement fmiGetRealOutputDerivatives

· Retrieving of Status Information from the Slave
    test and implement fmiGetStatus
    test and implement fmiGetRealStatus
    test and implement fmiGetIntegerStatus
    test and implement fmiGetBooleanStatus
    test and implement fmiGetStringStatus
variable was returning null on getValue

TODO
·  Transfer of input / output values and parameters:
	test fmiSetBoolean
	test fmiSetString
	test and implement fmiSetRealInputDerivatives
	test and implement fmiGetRealOutputDerivatives

· Retrieving of Status Information from the Slave
    test and implement fmiGetStatus
    test and implement fmiGetRealStatus
    test and implement fmiGetIntegerStatus
    test and implement fmiGetBooleanStatus
    test and implement fmiGetStringStatus