添加扫码支付生成二维码的接口及其单元测试，#113

weixin-java-mp/pom.xml

@@ -59,7 +59,11 @@
       <artifactId>xml-path</artifactId>
       <version>3.0.1</version>
     </dependency>
-
+    <dependency>
+      <groupId>com.github.binarywang</groupId>
+      <artifactId>qrcode-utils</artifactId>
+      <version>1.0</version>
+    </dependency>
   </dependencies>
 
   <build>