fs read cache 
Caches utf8 files internally based on the files' mtime. I'm not sure how much performance this adds, and mtimes are per-second, so this would fail if the file is changed multiple times in a second.
You should probably not use this.
API
var read = require('fs-read-cache')
read('filename.txt', function (err, string) {
})
read.clear() // clear the cache
License
The MIT License (MIT)
Copyright (c) 2014 Jonathan Ong me@jongleberry.com
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
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copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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THE SOFTWARE.
