ref. mqtterror class in init

Author: brentru

.travis.yml

@@ -16,8 +16,8 @@ install:
   - pip install .
 
 script:
-  - git clone https://github.com/adafruit/io-client-python.git
-  - cd io-client-python/tests
+  - cd docs && sphinx-build -E -W -b html . _build/html
+  - cd ..
+  - cd tests/
   - git checkout api-v2
-  - python -m unittest discover
-  - cd docs && sphinx-build -E -W -b html . _build/html
+  - python -m unittest discover

Adafruit_IO/__init__.py

@@ -20,6 +20,6 @@
 # SOFTWARE.
 from .client import Client
 from .mqtt_client import MQTTClient
-from .errors import AdafruitIOError, RequestError, ThrottlingError
+from .errors import AdafruitIOError, RequestError, ThrottlingError, MQTTError
 from .model import Data, Feed, Group
 from ._version import __version__

Adafruit_IO/errors.py

@@ -58,6 +58,7 @@ def __init__(self):
             "requests in a short period of time. Please reduce the rate of requests " \
             "and try again later.")
 
+
 class MQTTError(Exception):
     """Handles connection attempt failed errors.
     """