title: GitHub Action workflow not running
body: <p>I have a GitHub action workflow file @ myrepo/.github/workflows/Build Webpage.yml it contains this: </p>
  
  <pre class="lang-yaml prettyprint-override"><code>name: Webpage Build
  
  on:
    push:
      branches:
        - webpage 
  
  jobs:
    build:
      runs-on: ubuntu-latest
      steps:
      - uses: actions/checkout@v2
      - name: setup node
        uses: actions/setup-node@v2-beta
        with:
          node-version: '12'
      - name: install deps and predeploy
        run: |
          npm ci
          npm run predeploy
      - name: Deploy 
        uses: JamesIves/github-pages-deploy-action@3.5.2
        with:
          GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}
          BRANCH: gh-pages
          FOLDER: build
  </code></pre>
  
  <p>When I push to the webpage branch nothing happens in the actions tab at all I can't tell if I have a syntax error or if something is completely not set up correctly, I have in past on this repo had errors relating to syntax like <code>every step must define a 'uses' or 'run' key</code>  which to me shows Github does recognize the workflow</p>