Initial travis script.

* missing key language, defaulting to ruby
* specified python, but setting is not relevant for ruby

Install analytics-python on travis

Test analytics import.

Weblint did not detect this. Not sure if this is causing travis not to build properly.
https://travis-ci.org/duly/analytics-python

Please override the script: key in your .travis.yml to run tests.

Relegate python -c "import analytics" to a before_script.
Actually run the test.py script in preparation for nose_tests.

```
  File "test.py", line 64
    'unicode': u'woo',
                    ^
SyntaxError: invalid syntax
```

11 Tests Fail due to the issues on Lines 11-13.
>EXAMPLE<
```
Traceback (most recent call last):
  File "test.py", line 37, in setUp
    analytics.init(secret, log_level=logging.DEBUG)
  File "/home/travis/build/duly/analytics-python/analytics/__init__.py", line 33, in init
    from analytics.client import Client
  File "/home/travis/build/duly/analytics-python/analytics/client.py", line 11, in <module>
    from stats import Statistics
ImportError: No module named stats
```

Python 2.7 and 2.6 fail horribly due to this modification.
importing as to avoid naming issues.
```
Traceback (most recent call last):
  File "/usr/lib/python2.7/threading.py", line 551, in __bootstrap_inner
    self.run()
  File "/home/travis/build/duly/analytics-python/analytics/client.py", line 96, in run
    self.client._sync_flush()
  File "/home/travis/build/duly/analytics-python/analytics/client.py", line 484, in _sync_flush
    url = options.host + options.endpoints['batch']
NameError: global name 'options' is not defined
```

Attempting to provide python 3 compatibility with six.
```
NameError: global name 'unicode' is not defined
```

```
NameError: global name 'long' is not defined
```

```
AttributeError: 'dict' object has no attribute 'iteritems'
```

Similar to:
duly/pyjs@311f7c6
One (1) test fails in each Python 3.3 and 3.4.
```
Traceback (most recent call last):
  File "test.py", line 77, in test_clean
    combined = dict(simple.items() + complicated.items())
TypeError: unsupported operand type(s) for +: 'dict_items' and 'dict_items'
```

```
NameError: global name 'unicode' is not defined
```
https://travis-ci.org/duly/analytics-python/jobs/21861913#L1198
http://pythonhosted.org//six/#six.u

http://docs.python.org/2/howto/unicode.html
http://docs.python.org/release/3.0.1/howto/unicode.html
```
Traceback (most recent call last):
  File "test.py", line 82, in test_clean
    analytics.default_client._clean(combined)
  File "/home/travis/build/duly/analytics-python/analytics/client.py", line 203, in _clean
    return self._clean_dict(item)
  File "/home/travis/build/duly/analytics-python/analytics/client.py", line 189, in _clean_dict
    data[k] = self._clean(v)
  File "/home/travis/build/duly/analytics-python/analytics/client.py", line 205, in _clean
    return self._coerce_unicode(item)
  File "/home/travis/build/duly/analytics-python/analytics/client.py", line 180, in _coerce_unicode
    return six.u(cmplx)
  File "/home/travis/virtualenv/python2.7/local/lib/python2.7/site-packages/six.py", line 528, in u
    return unicode(s.replace(r'\\', r'\\\\'), "unicode_escape")
AttributeError: 'exceptions.Exception' object has no attribute 'replace'
```

Determine what is causing the exception by encapsulating cmplx in a try-except block.
```
Traceback (most recent call last):
  File "test.py", line 82, in test_clean
    analytics.default_client._clean(combined)
  File "/home/travis/build/duly/analytics-python/analytics/client.py", line 203, in _clean
    return self._clean_dict(item)
  File "/home/travis/build/duly/analytics-python/analytics/client.py", line 189, in _clean_dict
    data[k] = self._clean(v)
  File "/home/travis/build/duly/analytics-python/analytics/client.py", line 205, in _clean
    return self._coerce_unicode(item)
  File "/home/travis/build/duly/analytics-python/analytics/client.py", line 180, in _coerce_unicode
    return cmplx.decode("utf-8", "strict")
AttributeError: 'exceptions.Exception' object has no attribute 'decode'
```

Since the key is exception and the value is an Exception. Run decode on the Exception arguments as opposed to the Exception itself which does not contain a 'decode' attribute. 
```
python/analytics/client.py", line 209, in _clean
    return self._coerce_unicode(item)
  File "/home/travis/build/duly/analytics-python/analytics/client.py", line 181, in _coerce_unicode
    item = cmplx.decode("utf-8", "strict")
AttributeError: 'exceptions.Exception' object has no attribute 'decode'
```

http://stackoverflow.com/questions/5099551/error-in-python-replace-attributeerror-tuple-object-has-no-attribute-repla
```
line 183, in _coerce_unicode
    item = exception.args.decode("utf-8", "strict")
AttributeError: 'tuple' object has no attribute 'decode'
```

Python 3.3 and 3.4 throw attribute errors
```
AttributeError: 'str' object has no attribute 'decode'
```

Change log('warn', ...) to 'warning'.
```
./home/travis/build/duly/analytics-python/analytics/client.py:27: DeprecationWarning: The 'warn' method is deprecated, use 'warning' instead
  method(*args, **kwargs)
```

Python 3.4 and 2.6.

Remove Python 3.4 due to errored job on travis.
https://travis-ci.org/duly/analytics-python/jobs/21865893

2.5 and 3.4 have a lack of support for virtualenv.