handle basestring in python3 - resolves #29
handle basestring in python3 - resolves #29

bmabey/pyLDAvis,napsternxg/pyLDAvis,bloody76/pyLDAvis,napsternxg/pyLDAvis,bloody76/pyLDAvis,napsternxg/pyLDAvis,bmabey/pyLDAvis,bmabey/pyLDAvis,bloody76/pyLDAvis