Added more env values for test in call and messages
Added tests for send_message
Added tests for get_message
Added tests for get_number
SImplified the get_client
Added from/to numbers as env vars. Added tests for number crud
merged the master commits
Modified tests.py
Added get_call
Merge branch 'master' of github.com:agiliq/plivo-python
Updating the commits from master
Used the correct get_number_group and rent_from_number_group
Reveted to use AvailableNumber over AvailableNumberGroup
Added a deprication warning.
Trying to get the correct env data in travis builds
Trying to fix the travis settings
Merge remote-tracking branch 'origin'