added some docs and better output; call python install always
added some docs and better output; call python install always

kkellerlbl/data_api,mlhenderson/data_api,kkellerlbl/data_api,mlhenderson/data_api,kbase/data_api,realmarcin/data_api,kkellerlbl/data_api,kbase/data_api,kkellerlbl/data_api,mlhenderson/data_api,kbase/data_api,kbase/data_api,kkellerlbl/data_api,mlhenderson/data_api,kbase/data_api,mlhenderson/data_api