add README

Author: yeliulee

README.md

@@ -0,0 +1,81 @@
+# ALAPI-SDK
+ALAPI 的 Java SDK / Java SDK for ALAPI.
+
+## 环境要求 (Environment)
+ - Java 8 / Kotlin
+ - Maven / Gradle
+ - Language Level 8 or greater
+
+## 安装 (Installation)
+(如果想以 jar 包安装) If you want to install with jar file
+
+(下载) Download [`dist/alapi-javasdk.jar`](dist/alapi-javasdk.jar)
+
+### Apache Maven
+package manager
+```xml
+<dependency>
+  <groupId>cn.alapi</groupId>
+  <artifactId>javasdk</artifactId>
+  <version>1.0</version>
+  <type>pom</type>
+</dependency>
+```
+
+Jar
+```xml
+<dependency>
+  <groupId>cn.alapi</groupId>
+  <artifactId>javasdk</artifactId>
+  <version>1.0.1</version>
+  <scope>system</scope>
+  <systemPath>path/to/alapi-javasdk.jar</systemPath>
+</dependency>
+```
+
+### Gradle
+
+package manager
+```groovy
+implementation 'cn.alapi:javasdk:1.0'
+```
+
+Jar
+```groovy
+compile files('path/to/alapi-javasdk.jar')
+```
+
+
+## 示例 (Example)
+```java
+// 替换为你自己的包名 / replace it with your own package name
+package org.example.sdktest;
+
+import cn.alapi.javasdk.AlapiClient;
+import cn.alapi.javasdk.AlapiRequest;
+import cn.alapi.javasdk.AlapiResponse;
+
+public class TestClass {
+    // 定义为静态属性以更好地重用
+    // Defined as a static property for better reuse
+    private static final AlapiClient client = new AlapiClient()
+            .setToken("your access token / 你的 token");
+
+    public static void main(String[] args) {
+        AlapiRequest request = new AlapiRequest();
+        // example "/api/joke/random"
+        request.setApi("API 地址 / specific API path");  
+        try {
+            AlapiResponse response = client.execute(request);
+            System.out.println(response.getCode()); // status code / 状态码
+            System.out.println(response.getMsg()); // status message / 状态消息
+            System.out.println(response.getData()); // api data / 请求数据
+            System.out.println(response.getTime()); // timestamp / 时间戳
+            System.out.println(response.getLogID()); // log id for this request / 本次请求记录 ID
+        } catch (Exception ignored) { }
+    }
+}
+```
+
+## 接口文档地址
+ALAPI 接口文档地址：[https://www.alapi.cn](https://www.alapi.cn)