Add IP Location API

Add Pocket API

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Added USGS Water Services API

Mapzen Search requires apiKey

Add Harvard Art Museums and alphabetize Art & Design section

[personality] Add icanhazdadjoke api

Update information for The Netherlands

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Update README.md

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Added data.medicare.gov to Health

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Mapzen services require api key, which developers can get at: https://mapzen.com/developers/

Minor typo

Validate PR updates exclusively

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Add open government data for New Zealand

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Too Many requests is fine for testing link validity. The link is active, it's just been hit one too many times.