Add Tox: Include tox for multiversion testing

[mdruger]

Add tox.ini file to enable multiversion testing. The done state for this card is to enable tox for python version 2.6 only. An additional card in this sprint will cover adding python version 2.7, and 3.3.

For testing,

get the latest build and this branch
run in a virtualenv with python 2.6 installed
run the command
$ tox

test results

the results of executing the above command and verifying passing tests should be this:

$ tox

|Name|Stmts|Miss|Cover|Missing|
|--------|--------|------|-------|-----------|
|aweber_api| 59| 14| 76% |28-46, 57, 90, 95|
|aweber_api.base| 29| 0| 100%| 
|aweber_api.collection| 86| 16| 81%| 43-45, 48-58, 101-102, 127, 131|
|aweber_api.data_dict|10|0 |100%|
|aweber_api.entry |83 |0 |100%|
|aweber_api.oauth |68 |9 |87% |21, 23-25, 36-39, 70, 75|
|aweber_api.response| 21| 1| 95%| 29|

TOTAL 356 40 89%

Ran 77 tests in 0.421s

OK
summary ---
py26: commands succeeded
congratulations :)

[ghost]

As of pip1.5, Pip no longer supports use-mirrors. You might as well wipe out this section.

[mdruger]

ok, I'll take it out. Thanks.

[mdruger]

ok. I'll remove that.

[ghost]

Could you add the .tox directory that tox creates to the .gitignore file?

[mdruger]

I'll add the entry, .tox/ to the .gitignore file as well.

[djt5019]

If you append a [] to the end of this command it will allow tox to optionally accept command line arguments for nosetests. So the commands will look like:

[testenv]
commands = python setup.py nosetests []

This will allow others to run specific tests or enable some other nose features.

For example, in order to verbosely run the test_aweber_api test across all of the supported Tox environments.:

env/bin/tox -- -v -x test/test_aweber_api.py

[mdruger]

ok, I'll add that.