Fixed a minor issue with encoding in gremlin-python readme
Fixed a minor issue with encoding in gremlin-python readme

Not sure why this was suddenly an issue, but docker builds recently started failing for me with python 3. Used codecs lib to read the file as UTF-8 and that seemed to fix the problem. CTR

artem-aliev/tinkerpop,artem-aliev/tinkerpop,krlohnes/tinkerpop,robertdale/tinkerpop,jorgebay/tinkerpop,krlohnes/tinkerpop,apache/incubator-tinkerpop,robertdale/tinkerpop,krlohnes/tinkerpop,krlohnes/tinkerpop,krlohnes/tinkerpop,robertdale/tinkerpop,apache/tinkerpop,pluradj/incubator-tinkerpop,apache/incubator-tinkerpop,apache/tinkerpop,pluradj/incubator-tinkerpop,apache/tinkerpop,apache/incubator-tinkerpop,pluradj/incubator-tinkerpop,apache/tinkerpop,robertdale/tinkerpop,jorgebay/tinkerpop,robertdale/tinkerpop,artem-aliev/tinkerpop,apache/tinkerpop,artem-aliev/tinkerpop,artem-aliev/tinkerpop,apache/tinkerpop,jorgebay/tinkerpop,jorgebay/tinkerpop,apache/tinkerpop