Update document to note requirements can use a DB2 Server, not just Data Server Driver.
Update document to note requirements can use a DB2 Server, not just Data Server Driver.

abiliooliveira/node-ibm_db,qpresley/node-ibm_db,Akpotohwo/node-ibm_db,silveirado/node-ibm_db,Akpotohwo/node-ibm_db,ibmdb/node-ibm_db,strongloop-forks/node-ibm_db,ibmdb/node-ibm_db,Akpotohwo/node-ibm_db,elkorep/node-ibm_db,strongloop-forks/node-ibm_db,elkorep/node-ibm_db,abiliooliveira/node-ibm_db,qpresley/node-ibm_db,abiliooliveira/node-ibm_db,elkorep/node-ibm_db,ibmdb/node-ibm_db,qpresley/node-ibm_db,abiliooliveira/node-ibm_db,ibmdb/node-ibm_db,qpresley/node-ibm_db,strongloop-forks/node-ibm_db,ibmdb/node-ibm_db,silveirado/node-ibm_db,Akpotohwo/node-ibm_db,strongloop-forks/node-ibm_db,qpresley/node-ibm_db,silveirado/node-ibm_db,elkorep/node-ibm_db,ibmdb/node-ibm_db,silveirado/node-ibm_db,Akpotohwo/node-ibm_db,Akpotohwo/node-ibm_db,qpresley/node-ibm_db