Added marker interface from CDI so it can be reused in other DI projects

Author: emacarron

src/main/java/org/apache/ibatis/annotations/Mapper.java

@@ -0,0 +1,41 @@
+/**
+ *    Copyright 2013-2016 the original author or authors.
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License");
+ *    you may not use this file except in compliance with the License.
+ *    You may obtain a copy of the License at
+ *
+ *       http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS,
+ *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *    See the License for the specific language governing permissions and
+ *    limitations under the License.
+ */
+package org.apache.ibatis.annotations;
+
+import static java.lang.annotation.ElementType.TYPE;
+import static java.lang.annotation.RetentionPolicy.RUNTIME;
+
+import java.lang.annotation.Inherited;
+import java.lang.annotation.Retention;
+import java.lang.annotation.Target;
+
+/**
+ * Marker interface for MyBatis mappers
+ * 
+ * @author Frank David Martínez
+ */
+@Inherited
+@Retention(RUNTIME)
+@Target({TYPE})
+public @interface Mapper {
+
+	/**
+	 * Mapper name that can be read by DI injection frameworks
+	 * @return Mapper name
+	 */
+	String value() default "";
+
+}