Deprecate "hipache" due to upstream inactivity

hipache/deprecated.md

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+This image is officially deprecated due to upstream inactivity (last updated Feb 2015, [2d36766](https://github.com/hipache/hipache/commit/2d3676638f8b4b1758d70a8dffde1bef88eacf32); last release Apr 2014, [0.3.1](https://github.com/hipache/hipache/releases/tag/0.3.1)).
+
+The following is a list of other HTTP proxies which might be suitable replacements depending on your needs:
+
+-	[`mailgun/vulcand`](https://hub.docker.com/r/mailgun/vulcand/)
+-	[`traefik`](https://hub.docker.com/_/traefik/)
+-	[`nginx`](https://hub.docker.com/_/nginx/)
+-	[`haproxy`](https://hub.docker.com/_/haproxy/)
+-	[`httpd`](https://hub.docker.com/_/httpd/)