README.md: add godoc reference badge

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Laurence Withers 2020-01-03 08:49:31 +00:00
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# src.lwithers.me.uk/go/writefile # src.lwithers.me.uk/go/writefile
[![GoDoc](https://godoc.org/src.lwithers.me.uk/go/writefile?status.svg)](https://godoc.org/src.lwithers.me.uk/go/writefile)
This package implements the common Unix technique of writing a new file by first This package implements the common Unix technique of writing a new file by first
writing a temporary file, then ensuring it is fsync()ed, before calling rename() writing a temporary file, then ensuring it is fsync()ed, before calling rename()
to atomically move into its final resting place. to atomically move into its final resting place.