prevent uuids from being recorded if they are longer than 64 chars
Merge pull request #14 from TwitchScience/block_long_uuid

prevent uuids from being recorded if they are longer than 64 chars
Provide `Parseable` interface

As we prep for multiple parsers it is necessary to move current
users of parser.ParseRequest{} to an interface and for them to provide
their local implementations of the struct.
Move the nginx parser under parser/nginx/
Clean up govet complaints
Provide Parser Registry
minor clean up to reader/reader.go
CR feedback: explicit parser registration
rename files