visualization: update 05-15 sig meeting note

sigs/visualization/meetings/001-20200515.md

@@ -20,8 +20,12 @@
 * Kou Zhenzhong (Huawei)
 
 ## Notes
-* To be added
+* Participants: Yu Ximiao, Chen Chao, Wang Yue, Huang Zhipeng, Gao Congli, Kou Zhenzhong, Wen Kai, Yu Weibiao, Miao Yanming.  
+* The meeting video can be found:
+> BiliBili: https://www.bilibili.com/video/BV1vQ4y1A7Z7/
+* Discuss and give profiling profiler data parser code refactoring plan
+    * Decouple analysis and parser module base on the compatible of current and future profiling data
+    * Above design has better expansibility
 
 ## Action items
-* To be added
-
+* Restructure code according to above conclusion