Add StatsD, use for API and Web download counts
Adjust styles of README content.

- do not set the font size to be 90% smaller
- adjust the margin bottom for headers
Adjust pre and code element styles.

Decrease the stark difference in color between the code and pre elements and the
rest of the text elements. This makes it a little easier on the eyes.
Merge pull request #787 from opscode/statsd

Add StatsD, use for API and Web download counts
Merge pull request #788 from opscode/readme_and_code_styles

Update README and code styles
Create Supermarket::StatsD wrapper

The Supermarket::StatsD wrapper creates a convenient place for calling the
STATSD constant while checking if it is defined.
Merge pull request #789 from opscode/statsd_hug

Create Supermarket::StatsD wrapper
Add CLA reporting functionality

Add CLA reporting functionality that will generate a CSV of signed CLAs
every month and send it out to a specified configurable email address.