Add keywords

Add some keywords to the package.json file.
Add test for site-utils

Add some tests for the site-utils code.
Add logger

Add a central place to write to the log to allow for potential global
log changes in the future.  Need to allow configuration of debug flag.
Add categories to site-utils

Add a list of categories for these items to the site-utils file.
Disable debug by default

Disable logging by default, still need a way to toggle this...
Add findCategory/findName to amazon site

Add the logic to find the category and name of the item to the amazon
logic.  This is ported over from the main price-finder file.  Include
tests.