update travis yml
update travis yml

PhonologicalCorpusTools/PyAnnotationGraph,MontrealCorpusTools/PolyglotDB,PhonologicalCorpusTools/PyAnnotationGraph,samihuc/PolyglotDB,samihuc/PolyglotDB,MontrealCorpusTools/PolyglotDB,PhonologicalCorpusTools/PolyglotDB,PhonologicalCorpusTools/PolyglotDB