Only run release on main (#17)

* feat: Remove unnecessary files in package

* update readme

* chore: Only run release on main

.github/workflows/pipeline.yml

@@ -51,11 +51,11 @@ jobs:
       - run: npm test
   release:
     needs: [build, test]
+    if: github.ref == 'refs/heads/main' && success()
     runs-on: ubuntu-latest
     strategy:
       matrix:
         node-version: ['lts/*']      
-    if: github.ref == 'refs/heads/main' && ${{ success() }}
     steps:
       - name: Checkout
         uses: actions/checkout@v3