build: switch from master to main

Author: bcoe

.github/workflows/ci.yaml

@@ -1,7 +1,7 @@
 on:
   push:
     branches:
-      - master
+      - main
   pull_request:
     types: [ assigned, opened, synchronize, reopened, labeled ]
 name: ci

.github/workflows/release-please.yml

@@ -1,7 +1,7 @@
 on:
    push:
      branches:
-       - master
+       - main
 name: release-please
 jobs:
   release-please:
@@ -12,7 +12,7 @@ jobs:
         with:
           token: ${{ secrets.GITHUB_TOKEN }}
           command: manifest
-          default-branch: master
+          default-branch: main
       - uses: actions/checkout@v2
       - uses: actions/setup-node@v1
         with:

README.md

@@ -9,7 +9,7 @@ The mighty option parser used by [yargs](https://github.com/yargs/yargs).
 
 visit the [yargs website](http://yargs.js.org/) for more examples, and thorough usage instructions.
 
-<img width="250" src="https://raw.githubusercontent.com/yargs/yargs-parser/master/yargs-logo.png">
+<img width="250" src="https://raw.githubusercontent.com/yargs/yargs-parser/main/yargs-logo.png">
 
 ## Example