update project

Author: magiclen

.github/workflows/ci.yml

@@ -0,0 +1,28 @@
+name: CI
+
+on: [push, pull_request]
+  
+jobs:
+  tests:
+    strategy:
+      fail-fast: false
+      matrix:
+        os:
+          - ubuntu-latest
+          - macos-latest
+          - windows-latest
+        node-version:
+          - 12.x
+          - 14.x
+          - 15.x
+          - 16.x
+    name: Use ${{ matrix.node-version }} on ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-node@v1
+        with:
+          node-version: ${{ matrix.node-version }}
+      - run: npm install
+      - run: npm run build --if-present
+      - run: npm test

README.md

@@ -1,6 +1,8 @@
 StringBuilder for Node.js
 =========
 
+[![CI](https://github.com/magiclen/node-stringbuilder/actions/workflows/ci.yml/badge.svg)](https://github.com/magiclen/node-stringbuilder/actions/workflows/ci.yml)
+
 An easy and fast in-memory string builder for Node.js.
 
 ## Code Example
@@ -33,21 +35,6 @@ console.log(sb.equalsIgnoreCase('be Added into Any position')); // true
 console.log(sb.toBuffer()); // UTF-8 encoded
 ```
 
-## Installation
-
-Run `npm i` or `npm install` to install.
-
-```bash
-npm install node-stringbuilder
-```
-
-If you want to save this module to package.json, please add `--save` option.
-
-```bash
-npm install node-stringbuilder --save
-```
-
-
 ## Features
 
   * Implemented with N-API.