Mitch Luedy has created a very good management pack for monitoring VMware. He also was gracious enough to make it available to everyone for free.
Link to his github repository of the entire solution is here.
This management pack uses PsSnapins in the powershell scripts. And vmware has ceased the use of snapins from 6.0.
I have modified the scripts to use modules and this management pack will work on vsphere 6.0 now.
Link to that repository is here.