docs: add use cases link to README

Yesphet · Yesphet · commit 0e41fed75aa5 · 2020-03-03T16:26:12.000+08:00
diff --git a/README.md b/README.md
@@ -26,4 +26,8 @@ mvn clean install
 # Skip tests, checkstyles, findbugs, etc for quick build
 mvn clean install -P quick
 
-```
+```
+
+### Use Cases
+
+[Click here to see more use cases](src/main/java/com/meitu/platform/lmstfy/Example.java).
