doc: add godoc badge

sbinet · sbinet · commit fef9b1a80cb7 · 2016-01-15T22:01:17.000+01:00
diff --git a/README.md b/README.md
@@ -1,4 +1,4 @@
-# Gonum Optimize [![Build Status](https://travis-ci.org/gonum/optimize.svg?branch=master)](https://travis-ci.org/gonum/optimize) [![Coverage Status](https://coveralls.io/repos/gonum/optimize/badge.svg?branch=master&service=github)](https://coveralls.io/github/gonum/optimize?branch=master)
+# Gonum Optimize [![Build Status](https://travis-ci.org/gonum/optimize.svg?branch=master)](https://travis-ci.org/gonum/optimize) [![Coverage Status](https://coveralls.io/repos/gonum/optimize/badge.svg?branch=master&service=github)](https://coveralls.io/github/gonum/optimize?branch=master) [![GoDoc](https://godoc.org/github.com/gonum/optimize?status.svg)](https://godoc.org/github.com/gonum/optimize)
 
 This is an optimization package for the Go language. More documentation can be seen at godoc.org/github.com/gonum/optimize
 

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`1`		`-# Gonum Optimize [![Build Status](https://travis-ci.org/gonum/optimize.svg?branch=master)](https://travis-ci.org/gonum/optimize) [![Coverage Status](https://coveralls.io/repos/gonum/optimize/badge.svg?branch=master&service=github)](https://coveralls.io/github/gonum/optimize?branch=master)`
	`1`	`+# Gonum Optimize [![Build Status](https://travis-ci.org/gonum/optimize.svg?branch=master)](https://travis-ci.org/gonum/optimize) [![Coverage Status](https://coveralls.io/repos/gonum/optimize/badge.svg?branch=master&service=github)](https://coveralls.io/github/gonum/optimize?branch=master) [![GoDoc](https://godoc.org/github.com/gonum/optimize?status.svg)](https://godoc.org/github.com/gonum/optimize)`
`2`	`2`
`3`	`3`	`This is an optimization package for the Go language. More documentation can be seen at godoc.org/github.com/gonum/optimize`
`4`	`4`