Making Action fail when diff fails to post

.github/workflows/test.yml

@@ -14,10 +14,9 @@ jobs:
     - run: |
         npm install
         npm run all
+
   test: # make sure the action works on a clean machine without building
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v1
     - uses: ./
-      with: 
-        milliseconds: 1000

README.md

@@ -1,17 +1,18 @@
-# ArgoCD Diff Github Action
+# ArgoCD Diff GitHub Action
+
 This action generates a diff between the current PR and the current state of the cluster. 
 
-Note that this includes any changes between your branch and latest master, as well as ways in which the cluster is out of sync. 
+Note that this includes any changes between your branch and latest `master`, as well as ways in which the cluster is out of sync. 
 
-# How to use it
+## Usage
 
 Example GH action:
-```
+```yaml
 name: ArgoCD Diff
 
 on:
   pull_request:
-    branches: [ master ]
+    branches: [master, main]
 
 jobs:
   argocd-diff:
@@ -32,15 +33,16 @@ jobs:
           argocd-extra-cli-args: --grpc-web
 ```
 
-# How it works
-1) Downloads the specified version of the ArgoCD binary, and makes it executable
-2) Connects to the ArgoCD api using the argocd token, and gets all the apps
-3) Filters the apps to the ones that live in the current repo
-3) Runs `argocd app diff` for each app
-5) Posts the diff output as a comment on the PR
+## How it works
+
+1. Downloads the specified version of the ArgoCD binary, and makes it executable
+2. Connects to the ArgoCD API using the `argocd-token`, and gets all the apps
+3. Filters the apps to the ones that live in the current repo
+4. Runs `argocd app diff` for each app
+5. Posts the diff output as a comment on the PR
+
+## Publishing
 
-# Publishing
 Build the script and commit to your branch:
 `npm run build && npm run pack`
-Commit the build output, and make a PR
-
+Commit the build output, and make a PR.