update about v4 support on windows
update about v4 support on windows

qpresley/node-ibm_db,Akpotohwo/node-ibm_db,ibmdb/node-ibm_db,Akpotohwo/node-ibm_db,Akpotohwo/node-ibm_db,ibmdb/node-ibm_db,ibmdb/node-ibm_db,qpresley/node-ibm_db,Akpotohwo/node-ibm_db,qpresley/node-ibm_db,Akpotohwo/node-ibm_db,qpresley/node-ibm_db,ibmdb/node-ibm_db,qpresley/node-ibm_db,ibmdb/node-ibm_db,ibmdb/node-ibm_db,Akpotohwo/node-ibm_db,qpresley/node-ibm_db