Fix __init.py__ version import error

Simple import fix allows segment.io analytics to import on Python 3.3.2
Adding .travis.yml to root to allow automated builds to check compatibility with Python 2.
```
>BEFORE<
Python 3.3.2 (v3.3.2:d047928ae3f6, May 16 2013, 00:06:53) [MSC v.1600 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import analytics
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "REDACTED\python\3.3.2\lib\site-packages\analytics\__init__.py", line 2, in <module>
    import version
ImportError: No module named 'version'
>>>

>AFTER<
Python 3.3.2 (v3.3.2:d047928ae3f6, May 16 2013, 00:06:53) [MSC v.1600 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import analytics
>>>
```