Update README.md

Author: antonmedv

README.md

@@ -1,4 +1,4 @@
-# Expr [![GoDoc](https://godoc.org/github.com/antonmedv/expr?status.svg)](https://godoc.org/github.com/antonmedv/expr) [![Build Status](https://travis-ci.org/antonmedv/expr.svg?branch=master)](https://travis-ci.org/antonmedv/expr) [![Go Report Card](https://goreportcard.com/badge/github.com/antonmedv/expr)](https://goreportcard.com/report/github.com/antonmedv/expr) [![Code Coverage](https://scrutinizer-ci.com/g/antonmedv/expr/badges/coverage.png?b=master)](https://scrutinizer-ci.com/g/antonmedv/expr/?branch=master) <a href="https://stars.medv.io/antonmedv/expr"><img src="https://stars.medv.io/antonmedv/expr.svg" alt="Sparkline" height="24"></a>
+# Expr [![Build Status](https://travis-ci.org/antonmedv/expr.svg?branch=master)](https://travis-ci.org/antonmedv/expr) [![Go Report Card](https://goreportcard.com/badge/github.com/antonmedv/expr)](https://goreportcard.com/report/github.com/antonmedv/expr) [![Code Coverage](https://scrutinizer-ci.com/g/antonmedv/expr/badges/coverage.png?b=master)](https://scrutinizer-ci.com/g/antonmedv/expr/?branch=master) <a href="https://stars.medv.io/antonmedv/expr"><img src="https://stars.medv.io/antonmedv/expr.svg" alt="Sparkline" height="24"></a>
 
 Expr is an engine that can evaluate expressions. 
 
@@ -40,7 +40,7 @@ Inspired by
 go get -u github.com/antonmedv/expr
 ```
 
-## Documentation
+## Documentation [![GoDoc](https://godoc.org/github.com/antonmedv/expr?status.svg)](https://godoc.org/github.com/antonmedv/expr)
 
 * See [godoc.org/github.com/antonmedv/expr](https://godoc.org/github.com/antonmedv/expr) for developer documentation,
 * See [The Expression Syntax](https://github.com/antonmedv/expr/wiki/The-Expression-Syntax) page to learn the syntax of the Expr expressions.