Add HHS Medicare Spending Data wrt Chronic Conditions

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Data is at http://www.whitehouse.gov/blog/2013/03/29/hhs-releases-medicare-data-spending-and-chronic-conditions

(Also known as Medicare Spending per Beneficiary (MSPB) Spending Breakdowns by Claim Type)

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More links/references via @GeekNurse (over email):

• http://live-docs.socrata.com/data.medicare.gov/spending-breakdown-by-claim
• https://data.medicare.gov/developers/docs/spending-breakdown-by-claim