[docs] new cheatsheet (#2649)
[docs] new cheatsheet (#2649)

[docs] new cheatsheet
ContinuumIO/dask,dask/dask,jakirkham/dask,mrocklin/dask,jakirkham/dask,blaze/dask,jcrist/dask,jcrist/dask,blaze/dask,ContinuumIO/dask,mrocklin/dask,dask/dask