Add config file option (#2)

* Introduced config file option

* added CLI tests

* Added API tests

* Updated README

* Added GitHub Action

* minor enhancements

Author: benmarch

.github/workflows/run-checks.yml

@@ -0,0 +1,26 @@
+# This workflow will do a clean install of node dependencies, build the source code and run tests across different versions of node
+# For more information see: https://help.github.com/actions/language-and-framework-guides/using-nodejs-with-github-actions
+
+name: Run Checks
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+      - name: Use Node.js 16
+        uses: actions/setup-node@v1
+        with:
+          node-version: 16
+      - run: npm ci
+      - run: npm test
+        env:
+          CI: true

.gitignore

@@ -3,7 +3,8 @@ node_modules
 npm-debug.log
 .DS_Store
 dist
-/build
+build
+coverage
 tmp
 .tmp
 yarn.lock