Delete README.md

lib/README.md

-All the business logic for pggat happens here.
-
-# Folder overview
-In general, the top level folder will hold the interface. A subfolder (generally the plural version of the parent folder's name) will hold versioned implementations.
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-## auth
-All authentication functions. Protocol unspecific.
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-## bouncer
-All routing: accepting frontends, backends, and handling transactions.
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-## middleware
-Intercept packets and perform operations on them
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-## perror
-Special postgres error types
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-## rob
-A fair-share scheduler
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-## util
-Project generic helper structures and functions
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-## zap
-Zero allocation packet handling
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-### zap/packets
-Packet reading/writing helpers