chore: update GitHub branch references to use HEAD

CONTRIBUTING.md

@@ -72,7 +72,7 @@ source ./sendgrid.env
 
 ##### Execute: #####
 
-See the [examples folder](https://github.com/sendgrid/ruby-http-client/tree/master/examples) to get started quickly.
+See the [examples folder](examples) to get started quickly.
 
 To run the example (after updating the emails):
 
@@ -89,20 +89,20 @@ Working examples that demonstrate usage.
 
 **ruby_http_client.rb**
 
-An HTTP client with a fluent interface using method chaining and reflection. By returning self on [method_missing](https://github.com/sendgrid/ruby-http-client/blob/master/lib/ruby_http_client.rb#L209) and [_()](https://github.com/sendgrid/ruby-http-client/blob/master/lib/ruby_http_client.rb#L194), we can dynamically build the URL using method chaining and [method_missing](https://github.com/sendgrid/ruby-http-client/blob/master/lib/ruby_http_client.rb#L209) allows us to dynamically receive the method calls to achieve reflection.
+An HTTP client with a fluent interface using method chaining and reflection. By returning self on [method_missing](lib/ruby_http_client.rb#L209) and [_()](lib/ruby_http_client.rb#L194), we can dynamically build the URL using method chaining and [method_missing](lib/ruby_http_client.rb#L209) allows us to dynamically receive the method calls to achieve reflection.
 
 This allows for the following mapping from a URL to a method chain:
 
-`/api_client/{api_key_id}/version` maps to `client.api_client._(api_key_id).version.<method>()` where <method> is a [HTTP verb](https://github.com/sendgrid/ruby-http-client/blob/master/lib/ruby_http_client.rb#L38).
+`/api_client/{api_key_id}/version` maps to `client.api_client._(api_key_id).version.<method>()` where <method> is a [HTTP verb](lib/ruby_http_client.rb#L38).
 
 <a name="testing"></a>
 ## Testing
 
 All PRs require passing tests before the PR will be reviewed.
 
-All test files are in the [`test`](https://github.com/sendgrid/ruby-http-client/tree/master/test) directory.
+All test files are in the [`test`](test) directory.
 
-For the purposes of contributing to this repo, please update the [`test_ruby_http_client.rb`](https://github.com/sendgrid/ruby-http-client/blob/master/test/test_ruby_http_client.rb) file with unit tests as you modify the code.
+For the purposes of contributing to this repo, please update the [`test_ruby_http_client.rb`](test/test_ruby_http_client.rb) file with unit tests as you modify the code.
 
 To run the tests:
 

README.md

@@ -1,6 +1,6 @@
-![SendGrid Logo](https://uiux.s3.amazonaws.com/2016-logos/email-logo%402x.png)
+![SendGrid Logo](twilio_sendgrid_logo.png)
 
-[![BuildStatus](https://travis-ci.org/sendgrid/ruby-http-client.svg?branch=master)](https://travis-ci.org/sendgrid/ruby-http-client)
+[![BuildStatus](https://travis-ci.org/sendgrid/ruby-http-client.svg?branch=main)](https://travis-ci.org/sendgrid/ruby-http-client)
 [![Email Notifications Badge](https://dx.sendgrid.com/badge/ruby)](https://dx.sendgrid.com/newsletter/ruby)
 [![Gem Version](https://badge.fury.io/rb/ruby_http_client.svg)](https://badge.fury.io/rb/ruby_http_client)
 [![MIT licensed](https://img.shields.io/badge/license-MIT-blue.svg)](./LICENSE.md)
@@ -14,7 +14,7 @@ If you are looking for the SendGrid API client library, please see [this repo](h
 # Announcements
 **The default branch name for this repository has been changed to `main` as of 07/27/2020.**
 
-All updates to this library are documented in our [CHANGELOG](https://github.com/sendgrid/ruby-http-client/blob/master/CHANGELOG.md).
+All updates to this library are documented in our [CHANGELOG](CHANGELOG.md).
 
 # Table of Contents
 - [Installation](#installation)
@@ -85,7 +85,7 @@ puts response.headers
 <a name="usage"></a>
 # Usage
 
-- [Example Code](https://github.com/sendgrid/ruby-http-client/tree/master/examples)
+- [Example Code](examples)
 
 <a name="roadmap"></a>
 # Roadmap
@@ -95,14 +95,14 @@ If you are interested in the future direction of this project, please take a loo
 <a name="contribute"></a>
 # How to Contribute
 
-We encourage contribution to our libraries, please see our [CONTRIBUTING](https://github.com/sendgrid/ruby-http-client/blob/master/CONTRIBUTING.md) guide for details.
+We encourage contribution to our libraries, please see our [CONTRIBUTING](CONTRIBUTING.md) guide for details.
 
 Quick links:
 
-- [Feature Request](https://github.com/sendgrid/ruby-http-client/blob/master/CONTRIBUTING.md#feature-request)
-- [Bug Reports](https://github.com/sendgrid/ruby-http-client/blob/master/CONTRIBUTING.md#submit-a-bug-report)
-- [Improvements to the Codebase](https://github.com/sendgrid/ruby-http-client/blob/master/CONTRIBUTING.md#improvements-to-the-codebase)
-- [Review Pull Requests](https://github.com/sendgrid/ruby-http-client/blob/master/CONTRIBUTING.md#code-reviews)
+- [Feature Request](CONTRIBUTING.md#feature-request)
+- [Bug Reports](CONTRIBUTING.md#submit-a-bug-report)
+- [Improvements to the Codebase](CONTRIBUTING.md#improvements-to-the-codebase)
+- [Review Pull Requests](CONTRIBUTING.md#code-reviews)
 
 <a name="about"></a>
 # About

first-timers.md

@@ -55,7 +55,7 @@ We label our issues according to their difficulty level. You can find easy ones
 5. Locally merge (or rebase) the upstream development branch into your topic branch:
 
    ```bash
-   git pull [--rebase] upstream master
+   git pull [--rebase] upstream main
    ```
 
 6. Push your topic branch up to your fork:
@@ -65,4 +65,4 @@ We label our issues according to their difficulty level. You can find easy ones
    ```
 
 7. [Open a Pull Request](https://help.github.com/articles/using-pull-requests/)
-    with a clear title and description against the `master` branch. All tests must be passing before we will review the PR.
+    with a clear title and description against the `main` branch. All tests must be passing before we will review the PR.