Changed to use nose rather than unittest.
Changed to use nose rather than unittest.

laijingtao/landlab,ManuSchmi88/landlab,RondaStrauch/landlab,amandersillinois/landlab,SiccarPoint/landlab,decvalts/landlab,RondaStrauch/landlab,csherwood-usgs/landlab,landlab/landlab,RondaStrauch/landlab,Carralex/landlab,Carralex/landlab,laijingtao/landlab,landlab/landlab,csherwood-usgs/landlab,landlab/landlab,cmshobe/landlab,cmshobe/landlab,SiccarPoint/landlab,cmshobe/landlab,ManuSchmi88/landlab,amandersillinois/landlab,decvalts/landlab,ManuSchmi88/landlab,Carralex/landlab