added readme

Author: Marak

README.md

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+# node-http-proxy - v0.1.0
+
+## battle-hardened node.js http reverse proxy
+
+
+
+###features
+
+- reverse-proxies incoming http.Server requests
+- can handled malformed http requests
+- uses event buffering to support application latency in proxied requests
+- minimal request overhead and latency
+- fully-tested
+- battled-hardened through production usage @ nodejitsu.com
+
+
+###when to use node-http-proxy
+
+let's suppose you were running multiple http application servers, but you only wanted to expose one machine to the internet. you could setup node-http-proxy on that one machine and then reverse-proxy the incoming http requests to locally running services which were not exposed to the outside network. 
+
+### how to use node-http-proxy
+