Adding documentation for a few methods
Adding documentation for a few methods

lindsayad/moose,laagesen/moose,andrsd/moose,dschwen/moose,permcody/moose,YaqiWang/moose,sapitts/moose,harterj/moose,SudiptaBiswas/moose,jessecarterMOOSE/moose,friedmud/moose,SudiptaBiswas/moose,milljm/moose,idaholab/moose,jessecarterMOOSE/moose,friedmud/moose,YaqiWang/moose,lindsayad/moose,harterj/moose,permcody/moose,YaqiWang/moose,bwspenc/moose,idaholab/moose,milljm/moose,dschwen/moose,milljm/moose,nuclear-wizard/moose,SudiptaBiswas/moose,laagesen/moose,bwspenc/moose,andrsd/moose,nuclear-wizard/moose,dschwen/moose,permcody/moose,andrsd/moose,bwspenc/moose,andrsd/moose,laagesen/moose,idaholab/moose,jessecarterMOOSE/moose,lindsayad/moose,bwspenc/moose,laagesen/moose,bwspenc/moose,harterj/moose,nuclear-wizard/moose,andrsd/moose,lindsayad/moose,sapitts/moose,jessecarterMOOSE/moose,harterj/moose,SudiptaBiswas/moose,friedmud/moose,idaholab/moose,laagesen/moose,sapitts/moose,sapitts/moose,nuclear-wizard/moose,milljm/moose,harterj/moose,dschwen/moose,lindsayad/moose,permcody/moose,dschwen/moose,YaqiWang/moose,sapitts/moose,idaholab/moose,SudiptaBiswas/moose,friedmud/moose,milljm/moose,jessecarterMOOSE/moose