function to get_ccle_cna
function to get_ccle_cna

- Just like cbio_client, takes a gene_list and cell_lines list to return CNA
sorgerlab/belpy,johnbachman/indra,johnbachman/indra,sorgerlab/belpy,pvtodorov/indra,pvtodorov/indra,pvtodorov/indra,pvtodorov/indra,johnbachman/belpy,johnbachman/belpy,sorgerlab/indra,bgyori/indra,sorgerlab/indra,sorgerlab/belpy,bgyori/indra,johnbachman/indra,bgyori/indra,johnbachman/belpy,sorgerlab/indra