docs: add README

Author: Yesphet

README.md

@@ -1,2 +1,17 @@
 # java-lmstfy-client
 Java client for LMSTFY
+
+
+### Using the SDK
+
+The recommended way to use the SDK for Java in your project is to consume it from Maven.
+
+You can import the SDK into your project as follows:
+
+```
+<dependency>
+    <groupId>com.meitu</groupId>
+    <artifactId>java-lmstfy-client</artifactId>
+    <version>1.0.0</version>
+</dependency>
+```