Expand the 1-line introduction of `mxPower` and `mxPowerSearch`  closes #206
Expand the 1-line introduction of `mxPower` and `mxPowerSearch`  closes #206

jpritikin/OpenMx,jpritikin/OpenMx,jpritikin/OpenMx,jpritikin/OpenMx,jpritikin/OpenMx,jpritikin/OpenMx