update extension icon (#48)

CHANGELOG.md

@@ -3,14 +3,15 @@ All notable changes to the "vscode-spring-initializr" extension will be document
 
 ## Unreleased
 
+## Released
+
 ### 0.2.0
 - Supported to specify Spring Initializr service URL.
 - Supported to specify Spring Boot version.
 - Supported to specify default Group/Artifact Id.
+- Updated extension icon.
 - Fixed some bugs.
 
-## Released
-
 ### 0.1.0
 - Supported to generate a Maven project with Spring Initializr.
 - Supported to generate a Gradle project with Spring Initializr.