updated travis config  - added python 3.6 from deadsnake repo (use official python executables for timely security updates in production env)
updated travis config
 - added python 3.6 from deadsnake repo (use official python executables for timely security updates in production env)

asyncee/django-easy-select2,asyncee/django-easy-select2,asyncee/django-easy-select2,asyncee/django-easy-select2