Use pip install . instead of calling setup.py (#5139) [ci skip]
Use pip install . instead of calling setup.py (#5139) [ci skip]

Ultimately this should result in the same, except pip will itself invoke
setup.py install, which allows it to better track what was done.
mrocklin/dask,ContinuumIO/dask,dask/dask,mrocklin/dask,jakirkham/dask,jakirkham/dask,ContinuumIO/dask,blaze/dask,blaze/dask,dask/dask