clean up doctests
clean up doctests

jayhetee/dask,mrocklin/dask,ssanderson/dask,simudream/dask,vikhyat/dask,mrocklin/dask,jcrist/dask,mraspaud/dask,mikegraham/dask,blaze/dask,ContinuumIO/dask,esc/dask,wiso/dask,jakirkham/dask,simudream/dask,jayhetee/dask,cpcloud/dask,hainm/dask,ContinuumIO/dask,gameduell/dask,dask/dask,chrisbarber/dask,clarkfitzg/dask,minrk/dask,wiso/dask,blaze/dask,dask/dask,marianotepper/dask,cowlicks/dask,PhE/dask,mraspaud/dask,minrk/dask,pombredanne/dask,jakirkham/dask,PhE/dask,vikhyat/dask,esc/dask,marianotepper/dask,hainm/dask,clarkfitzg/dask,jcrist/dask,ssanderson/dask,freeman-lab/dask,pombredanne/dask,freeman-lab/dask