Making shear and P wave speed user defined quantities for seismic for…#184

Merged

aeslaughter merged 1 commit intoidaholab:develfrom sveerara:seismic_force_edit

Dec 13, 2018

+101-60

Commits on Dec 9, 2018

Making shear and P wave speed user defined quantities for seismic force and non reflecting BC idaholab#183
sveerara
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