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+go-version [![Build Status](https://travis-ci.org/mcuadros/go-version.png?branch=master)](https://travis-ci.org/mcuadros/go-version) [![GoDoc](https://godoc.org/github.com/mcuadros/go-version?status.png)](http://godoc.org/github.com/mcuadros/go-version)
+==============================
+
+Version normalizer and comparison library for go, heavy based on PHP version_compare function and Version comparsion libs from [Composer](https://github.com/composer/composer) PHP project
+
+Installation
+------------
+
+The recommended way to install go-version
+
+```
+go get github.com/mcuadros/go-version
+```
+
+Examples
+--------
+
+How import the package
+
+```go
+import (
+    "github.com/mcuadros/go-version"
+)
+```
+
+`version.Normalize()`: Normalizes a version string to be able to perform comparisons on it
+
+```go
+version.Normalize("10.4.13-b")
+//Returns: 10.4.13.0-beta
+```
+
+
+`version.CompareSimple()`: Compares two normalizated version number strings
+
+```go
+version.CompareSimple("1.2", "1.0.1")
+//Returns: 1
+
+version.CompareSimple("1.0rc1", "1.0")
+//Returns: -1
+```
+
+
+`version.Compare()`: Compares two normalizated version number strings, for a particular relationship
+
+```go
+version.Compare("1.0-dev", "1.0", "<")
+//Returns: true
+
+version.Compare("1.0rc1", "1.0", ">=")
+//Returns: false
+
+version.Compare("2.3.4", "v3.1.2", "<")
+//Returns: true
+```
+
+`version.ConstrainGroup.Match()`: Match a given version againts a group of constrains, read about constraint string format at [Composer documentation](http://getcomposer.org/doc/01-basic-usage.md#package-versions)  
+
+```go
+c := version.NewConstrainGroupFromString(">2.0,<=3.0")
+c.Match("2.5.0beta")
+//Returns: true
+
+c := version.NewConstrainGroupFromString("~1.2.3")
+c.Match("1.2.3.5")
+//Returns: true
+```
+
+`version.Sort()`: Sorts a string slice of version number strings using version.CompareSimple()
+
+```go
+version.Sort([]string{"1.10-dev", "1.0rc1", "1.0", "1.0-dev"})
+//Returns []string{"1.0-dev", "1.0rc1", "1.0", "1.10-dev"}
+```
+
+License
+-------
+
+MIT, see [LICENSE](LICENSE)
+
+[![Bitdeli Badge](https://d2weczhvl823v0.cloudfront.net/mcuadros/go-version/trend.png)](https://bitdeli.com/free "Bitdeli Badge")