Adding a tracer resolver (naive)

pom.xml

@@ -36,6 +36,12 @@
             <version>4.9</version>
         </dependency>
 
+        <dependency>
+            <groupId>com.google.auto.service</groupId>
+            <artifactId>auto-service</artifactId>
+            <version>1.0-rc3</version>
+        </dependency>
+
         <!-- Testing dependencies -->
         <dependency>
             <groupId>junit</groupId>
@@ -55,6 +61,11 @@
             <version>2.7.22</version>
             <scope>test</scope>
         </dependency>
+        <dependency>
+            <groupId>io.opentracing.contrib</groupId>
+            <artifactId>opentracing-tracerresolver</artifactId>
+            <version>0.0.3</version>
+        </dependency>
     </dependencies>
 
     <build>

src/main/java/com/datadoghq/trace/resolver/DDTracerResolver.java

@@ -0,0 +1,16 @@
+package com.datadoghq.trace.resolver;
+
+import com.datadoghq.trace.DDTracer;
+import com.google.auto.service.AutoService;
+import io.opentracing.Tracer;
+import io.opentracing.contrib.tracerresolver.TracerResolver;
+
+
+@AutoService(TracerResolver.class)
+public class DDTracerResolver extends TracerResolver{
+
+    @Override
+    protected Tracer resolve() {
+        return new DDTracer();
+    }
+}