Update README.md

Grammar police!
Fixed haywire building as i386 on Unix when it should be building for x64.
Fixed issue #45 by moving the last_was_value global variable that was used when Haywire was single threaded to the connection struct to properly support multiple event loop fan-out.
Merge pull request #43 from jbogard/patch-1

Update README.md
Added first draft of CMake build system that will eventually replace Gyp.
Added a script to run benchmarks.
Added pipeline benchmark Lua script.
Updated with the proper Lua script file name.
Merge pull request #2 from kellabyte/master

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