Changing OX3APIClient to Client
Added client_from_file

Added client_from_file function to create a Client instance from an ini
style config file as well as tests.
Document client_from_file
Adding exception handling.

client_from_file will now catch errors if the config file is
missing a required parameter for the ox3apiclient.Client instance.
Added support for loading config file. Closes #1
Added convenience methods for authentication

Added logon and logoff convenience methods.

logon will allow user complete OAuth flow without needing to call all
methods manually.

logoff will call DELETE /a/session.
Added logon/loggoff methods. Closes #10
Allow client_from_file to load optional Client parameters

client_from_file now loads optional Client parameters. This allows
setting almost all parameters in an external file.
Created an alias for OX3APIClient

Create an alias for OX3APIClient for backwards compatibility.
Updates to support Python 2.4 and 2.5
Fixes #5. JSON errors when deleting an object

Fixes issue with attempts to parse the body of a 204 No Content
response.
Merge branch 'develop' into python24-support
Catch invalid errors in urllib2 from 2.4 and 2.5

urllib2 in Python 2.4 and 2.5 throws error for all non 200 responses.
Added support to catch these for 201 and 204 response codes.
Added support for Python 2.4 and 2.5. Closes #3.
Make a better readme
Bump release version and add History.md
Merge branch 'release-0.2.0' into develop
Merge branch 'release-0.2.0'
Add support for uploading creatives. Closes #2
Merge branch 'uploadcreative' into develop