Add project Datacounter.

README.md

@@ -471,6 +471,7 @@ See [go-hardware](https://github.com/rakyll/go-hardware) for a comprehensive lis
 
 * [autoflags](https://github.com/artyom/autoflags) - Go package to automatically define command line flags from struct fields.
 * [browscap_go](https://github.com/fromYukki/browscap_go) - GoLang Library for [Browser Capabilities Project](http://browscap.org/).
+* [datacounter](https://github.com/miolini/datacounter) - Go counters for readers/writer/http.ResponseWriter.
 * [go-multierror](https://github.com/hashicorp/go-multierror) - A Go (golang) package for representing a list of errors as a single error.
 * [gopsutil](https://github.com/shirou/gopsutil) - A cross-platform library for retrieving process and system utilization(CPU, Memory, Disks, etc).
 * [gosms](https://github.com/haxpax/gosms) - Your own local SMS gateway in Go that can be used to send SMS