Add go 1.19 to test matrix

* Rename default branch from master to main
* Add badges to README

.github/workflows/test.yaml

@@ -2,18 +2,16 @@ name: test
 on:
   push:
     branches:
-      - master
+      - main
   pull_request:
-    branches:
-      - master
 jobs:
   build:
     name: go
     runs-on: ubuntu-latest
     strategy:
       fail-fast: false
       matrix:
-        go: ['1.17', '1.18']
+        go: ['1.17', '1.18', '1.19']
     steps:
       - name: setup
         uses: actions/setup-go@v3

README.md

@@ -1,4 +1,4 @@
-# OAuth1 [![Build Status](https://github.com/dghubble/oauth1/workflows/test/badge.svg)](https://github.com/dghubble/oauth1/actions?query=workflow%3Atest+branch%3Amaster) [![Coverage](https://gocover.io/_badge/github.com/dghubble/oauth1)](https://gocover.io/github.com/dghubble/oauth1) [![GoDoc](http://godoc.org/github.com/dghubble/oauth1?status.svg)](http://godoc.org/github.com/dghubble/oauth1)
+# OAuth1 [![GoDoc](https://pkg.go.dev/badge/github.com/dghubble/oauth1.svg)](https://pkg.go.dev/github.com/dghubble/oauth1) [![Workflow](https://github.com/dghubble/oauth1/actions/workflows/test.yaml/badge.svg)](https://github.com/dghubble/oauth1/actions/workflows/test.yaml?query=branch%3Amain) [![Sponsors](https://img.shields.io/github/sponsors/dghubble?logo=github)](https://github.com/sponsors/dghubble) [![Twitter](https://img.shields.io/badge/twitter-follow-1da1f2?logo=twitter)](https://twitter.com/dghubble)
 
 <img align="right" src="https://storage.googleapis.com/dghubble/oauth1.png">
 

doc.go

@@ -8,7 +8,7 @@ authorized requests on behalf of a user (e.g. API calls).
 It takes design cues from golang.org/x/oauth2, providing an http.Client which
 handles request signing and authorization.
 
-Usage
+# Usage
 
 Package oauth1 implements the OAuth1 authorization flow and provides an
 http.Client which can sign and authorize OAuth1 requests.
@@ -23,7 +23,7 @@ clients.
 * https://github.com/dghubble/go-digits
 * https://github.com/benfb/go-tumblr
 
-Authorization Flow
+# Authorization Flow
 
 Perform the OAuth 1 authorization flow to ask a user to grant an application
 access to his/her resources via an access token.
@@ -69,7 +69,7 @@ to make requests on behalf of the user.
 Check the examples to see this authorization flow in action from the command
 line, with Twitter PIN-based login and Tumblr login.
 
-Authorized Requests
+# Authorized Requests
 
 Use an access Token to make authorized requests on behalf of a user.