Update developers list in pom.xml. Add screenshots in README.

README.md

@@ -42,8 +42,15 @@ _In chronological order_
 
 
 # Screenshots
+- Topological graph of application clusters.
+<img src="https://sky-walking.github.io/page-resources/3.0/topological_graph.png"/>
+
+- Trace query.
 <img src="https://sky-walking.github.io/page-resources/3.0/trace_segment.png"/>
 
+- Span detail.
+<img src="https://sky-walking.github.io/page-resources/3.0/span.png" />
+
 
 # Document
 * [WIKI](https://github.com/wu-sheng/sky-walking/wiki)

pom.xml

@@ -24,6 +24,21 @@
 			<name>Zhang Xin</name>
 			<url>https://github.com/ascrutae</url>
 		</developer>
+        <developer>
+            <name>Tan Zhen</name>
+            <url>https://github.com/mircoteam</url>
+        </developer>
+        <developer>
+            <name>Xu Yan</name>
+            <url>https://github.com/TastySummer</url>
+        </developer>
+        <developer>
+            <name>Peng Yongsheng</name>
+            <url>https://github.com/pengys5</url>
+        </developer>
+        <developer>
+            <name>Dai Wen</name>
+        </developer>
 	</developers>
 
 	<modules>