chore: update GitHub branch references to use HEAD (twilio#210)

CHANGES.md

@@ -578,7 +578,7 @@ twilio-cli changelog
 --------------------------
 **Library**
 - [PR #126](https://github.com/twilio/twilio-cli/pull/126): Rename 'profiles:add' to 'profiles:create'. Thanks to [@childish-sambino](https://github.com/childish-sambino)!
-- [PR #124](https://github.com/twilio/twilio-cli/pull/124): Auto-deploy via Travis CI upon tagged commit to master. Thanks to [@thinkingserious](https://github.com/thinkingserious)!
+- [PR #124](https://github.com/twilio/twilio-cli/pull/124): Auto-deploy via Travis CI upon tagged commit to main. Thanks to [@thinkingserious](https://github.com/thinkingserious)!
 - [PR #125](https://github.com/twilio/twilio-cli/pull/125): fix(chore): Fix error message when exceeding schema max items. Thanks to [@jamesgeorge007](https://github.com/jamesgeorge007)!
 
 **Api**

CONTRIBUTING.md

@@ -121,7 +121,7 @@ Before you submit your pull request consider the following guidelines:
 * Make your changes in a new git branch:
 
     ```shell
-    git checkout -b my-fix-branch master
+    git checkout -b my-fix-branch main
     ```
 
 * Create your patch, **including appropriate test cases**.
@@ -148,7 +148,7 @@ Before you submit your pull request consider the following guidelines:
     git push origin my-fix-branch
     ```
 
-In GitHub, send a pull request to `twilio-cli:master`.
+In GitHub, send a pull request to `twilio-cli:main`.
 If we suggest changes, then:
 
 * Make the required updates.

README.md

@@ -1,7 +1,7 @@
 # A CLI for Twilio
 
 [![npm version](https://badge.fury.io/js/twilio-cli.svg)](https://badge.fury.io/js/twilio-cli)
-[![Travis Build Status](https://travis-ci.org/twilio/twilio-cli.svg?branch=master)](https://travis-ci.org/twilio/twilio-cli.svg?branch=master)[![Appveyor Build Status](https://ci.appveyor.com/api/projects/status/48hf89rslhjhn7ca?svg=true)](https://ci.appveyor.com/project/TwilioAPI/twilio-cli)[![codecov](https://codecov.io/gh/twilio/twilio-cli/branch/master/graph/badge.svg)](https://codecov.io/gh/twilio/twilio-cli)
+[![Travis Build Status](https://travis-ci.org/twilio/twilio-cli.svg?branch=main)](https://travis-ci.org/twilio/twilio-cli.svg?branch=main)[![Appveyor Build Status](https://ci.appveyor.com/api/projects/status/48hf89rslhjhn7ca?svg=true)](https://ci.appveyor.com/project/TwilioAPI/twilio-cli)[![codecov](https://codecov.io/gh/twilio/twilio-cli/branch/main/graph/badge.svg)](https://codecov.io/gh/twilio/twilio-cli)
 [![Learn with TwilioQuest](https://img.shields.io/static/v1?label=TwilioQuest&message=Learn%20to%20contribute%21&color=F22F46&labelColor=1f243c&style=flat-square&logo=data:image/png;base64,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)](https://twil.io/learn-open-source)
 
 **The default branch name for this repository has been changed to `main` as of 07/27/2020.**

test/commands/email/test.txt

@@ -1,3 +1,3 @@
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