Update references to master branch (#980)

README.md

@@ -1,6 +1,6 @@
 [![Travis CI](https://travis-ci.org/Microsoft/sqltoolsservice.svg?branch=dev)](https://travis-ci.org/Microsoft/sqltoolsservice)
 [![AppVeyor](https://ci.appveyor.com/api/projects/status/github/Microsoft/sqltoolsservice?svg=true&retina=true&branch=dev)](https://ci.appveyor.com/project/kburtram/sqltoolsservice)
-[![Coverage Status](https://coveralls.io/repos/github/Microsoft/sqltoolsservice/badge.svg?branch=master)](https://coveralls.io/github/Microsoft/sqltoolsservice?branch=master)
+[![Coverage Status](https://coveralls.io/repos/github/Microsoft/sqltoolsservice/badge.svg?branch=main)](https://coveralls.io/github/Microsoft/sqltoolsservice?branch=main)
 
 # Microsoft SQL Tools Service 
 The SQL Tools Service is an application that provides core functionality for various SQL Server tools.  These features include the following:

appveyor.yml

@@ -9,7 +9,7 @@ environment:
 # safelist
 branches:
   only:
-    - master
+    - main
     - dev
 
 before_build:

azure-pipelines/build.yml

@@ -216,4 +216,4 @@ schedules:
   displayName: Mon-Fri at 5:00AM
   branches:
     include:
-    - master
+    - main

azure-pipelines/release.yml

@@ -50,7 +50,7 @@ stages:
       displayName: 'PowerShell Script'
       inputs:
         filePath: '$(System.DefaultWorkingDirectory)/CrossPlatBuildScripts/AutomatedReleases/sqltoolsserviceRelease.ps1'
-        arguments: '-workspace $(System.DefaultWorkingDirectory)/sqltoolsservice -minTag v2.0.0.0 -target master -tagFormat release'
+        arguments: '-workspace $(System.DefaultWorkingDirectory)/sqltoolsservice -minTag v2.0.0.0 -target main -tagFormat release'
         workingDirectory: '$(System.DefaultWorkingDirectory)/sqltoolsservice'
       env:
         GITHUB_DISTRO_MIXIN_PASSWORD: $(github-distro-mixin-password)
@@ -64,4 +64,4 @@ schedules:
   displayName: Mon-Fri at 7:00
   branches:
     include:
-    - master
+    - main