Remove spurious argv specification from xtract_smoothness() documentation. Fixes #27.
Remove spurious argv specification from xtract_smoothness() documentation. Fixes #27.

jamiebullock/LibXtract,kecsap/LibXtract,eriser/LibXtract,caseybasichis/LibXtract,caseybasichis/LibXtract,jamiebullock/LibXtract,kecsap/LibXtract,kecsap/LibXtract,eriser/LibXtract,caseybasichis/LibXtract,eriser/LibXtract,jamiebullock/LibXtract