Numerous docstring updates to Tools
Numerous docstring updates to Tools


Former-commit-id: d1022127f00c4b7d6908d5c0ebc32514d8a1ab68
Former-commit-id: 41dca72b47868e53abb0702a1067f57673a52d8f
PMEAL/OpenPNM,TomTranter/OpenPNM,amdouglas/OpenPNM,stadelmanma/OpenPNM,amdouglas/OpenPNM