Fixed issue with seasonal keyword. Now correctly adds a key for this attribute.
Merge remote-tracking branch 'alilja/master'

Merging in the doc changes by alilja to bring the docs and setup.py up to the latest revision.
Added beer description, brewed_at (if contract brewed), and modified attribute handling.  Now most beer attributes are added only if they are found on the webpage.  In addition, modified the AliasedBeer exception to return both the original url as well as the referenced "new" url.  Also some minor housecleaning to try to reduce lines over 80 characters, as recommended in PEP 8.
Merge pull request #5 from OrganicIrradiation/master

Added a number of features to the beer function