Preparations for the new v6 branch: some updates for .v6 url

Author: Toshik1978

.travis.yml

@@ -1,6 +1,6 @@
 language: go
 go:
-  - 1.13.15
+  - 1.15.6
   - tip
 matrix:
   allow_failures:
@@ -21,6 +21,7 @@ before_install:
   - ln -s $GOPATH/src/github.com/$TRAVIS_REPO_SLUG $GOPATH/src/gopkg.in/webhooks.v3
   - ln -s $GOPATH/src/github.com/$TRAVIS_REPO_SLUG $GOPATH/src/gopkg.in/webhooks.v4
   - ln -s $GOPATH/src/github.com/$TRAVIS_REPO_SLUG $GOPATH/src/gopkg.in/webhooks.v5
+  - ln -s $GOPATH/src/github.com/$TRAVIS_REPO_SLUG $GOPATH/src/gopkg.in/webhooks.v6
 
 before_script:
   - go get -t ./...
@@ -29,6 +30,6 @@ script:
   - make test
 
 after_success: |
-  [ $TRAVIS_GO_VERSION = 1.13.15 ] &&
+  [ $TRAVIS_GO_VERSION = 1.15.6 ] &&
   overalls -project="github.com/go-playground/webhooks" -covermode=count -ignore=.git,_examples,testdata -debug &&
   goveralls -coverprofile=overalls.coverprofile -service travis-ci -repotoken $COVERALLS_TOKEN

README.md

@@ -1,10 +1,10 @@
 Library webhooks
 ================
-<img align="right" src="https://raw.githubusercontent.com/go-playground/webhooks/v5/logo.png">![Project status](https://img.shields.io/badge/version-5.17.0-green.svg)
+<img align="right" src="https://raw.githubusercontent.com/go-playground/webhooks/v5/logo.png">![Project status](https://img.shields.io/badge/version-6.0.0-green.svg)
 [![Build Status](https://travis-ci.org/go-playground/webhooks.svg?branch=v5)](https://travis-ci.org/go-playground/webhooks)
 [![Coverage Status](https://coveralls.io/repos/go-playground/webhooks/badge.svg?branch=v5&service=github)](https://coveralls.io/github/go-playground/webhooks?branch=v5)
 [![Go Report Card](https://goreportcard.com/badge/go-playground/webhooks)](https://goreportcard.com/report/go-playground/webhooks)
-[![GoDoc](https://godoc.org/gopkg.in/go-playground/webhooks.v5?status.svg)](https://godoc.org/gopkg.in/go-playground/webhooks.v5)
+[![GoDoc](https://godoc.org/gopkg.in/go-playground/webhooks.v6?status.svg)](https://godoc.org/gopkg.in/go-playground/webhooks.v6)
 ![License](https://img.shields.io/dub/l/vibe-d.svg)
 
 Library webhooks allows for easy receiving and parsing of GitHub, Bitbucket and GitLab Webhook Events
@@ -24,17 +24,17 @@ Installation
 Use go get.
 
 ```shell
-go get -u gopkg.in/go-playground/webhooks.v5
+go get -u gopkg.in/go-playground/webhooks.v6
 ```
 
 Then import the package into your own code.
 
-	import "gopkg.in/go-playground/webhooks.v5"
+	import "gopkg.in/go-playground/webhooks.v6"
 
 Usage and Documentation
 ------
 
-Please see http://godoc.org/gopkg.in/go-playground/webhooks.v5 for detailed usage docs.
+Please see http://godoc.org/gopkg.in/go-playground/webhooks.v6 for detailed usage docs.
 
 ##### Examples:
 ```go
@@ -45,7 +45,7 @@ import (
 
 	"net/http"
 
-	"gopkg.in/go-playground/webhooks.v5/github"
+	"gopkg.in/go-playground/webhooks.v6/github"
 )
 
 const (

_examples/multiple-handlers/main.go

@@ -5,7 +5,7 @@ import (
 
 	"net/http"
 
-	"gopkg.in/go-playground/webhooks.v5/github"
+	"gopkg.in/go-playground/webhooks.v6/github"
 )
 
 const (

_examples/single-handler/main.go

@@ -5,7 +5,7 @@ import (
 
 	"net/http"
 
-	"gopkg.in/go-playground/webhooks.v5/github"
+	"gopkg.in/go-playground/webhooks.v6/github"
 )
 
 const (