Add autodeployment workflow.

Author: coreybutler

.github/workflows/release.yml

@@ -0,0 +1,64 @@
+name: Tag, Release, & Publish
+
+on:
+  push:
+    branches:
+      - master
+
+jobs:
+  deploy:
+    name: Deploy
+    runs-on: ubuntu-latest
+    steps:
+        # Checkout updated source code
+      - uses: actions/checkout@v2
+    
+        # If the version has changed, create a new git tag for it.
+      - name: Tag
+        id: autotagger
+        uses: butlerlogic/action-autotag@master
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+    
+        # The remaining steps all depend on whether or not
+        # a new tag was created. There is no need to release/publish 
+        # updates until the code base is in a releaseable state.
+
+        # If the new version/tag is a pre-release (i.e. 1.0.0-beta.1), create
+        # an environment variable indicating it is a prerelease.
+      - name: Pre-release
+        if: steps.autotagger.outputs.tagname != ''
+        run: |
+          if [[ "${{ steps.autotagger.output.version }}" == *"-"* ]]; then echo "::set-env IS_PRERELEASE=true";else echo "::set-env IS_PRERELEASE=''";fi
+    
+        # Create a github release
+        # This will create a snapshot of the module,
+        # available in the "Releases" section on Github.
+      - name: Release
+        id: create_release
+        if: steps.autotagger.outputs.tagname != ''
+        uses: actions/create-release@v1.0.0
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          tag_name: ${{ steps.autotagger.outputs.tagname }}
+          release_name: ${{ steps.autotagger.outputs.tagname }}
+          body: ${{ steps.autotagger.outputs.tagmessage }}
+          draft: false
+          prerelease: env.IS_PRERELEASE != ''
+
+        # Use this action to publish a single module to npm.
+      - name: Publish
+        id: publish_npm
+        if: steps.autotagger.outputs.tagname != ''
+        uses: author/action-publish@master
+        env: 
+          REGISTRY_TOKEN: ${{ secrets.REGISTRY_TOKEN }}
+
+      - name: Rollback Release
+        if: failure() && steps.create_release.outputs.id != ''
+        uses: author/action-rollback@stable
+        with:
+          tag: ${{ steps.autotagger.outputs.tagname }}
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.gitignore

@@ -3,3 +3,4 @@ node_modules
 .*
 !.gitignore
 !.npmignore
+!.github