add vscode icon

Author: Tim Etchells

README.md

@@ -4,7 +4,7 @@
 
 # Microclimate Developer Tools for VS Code
 
-[![Marketplace](https://img.shields.io/vscode-marketplace/v/IBM.microclimate-tools.svg?label=marketplace)](https://marketplace.visualstudio.com/items?itemName=IBM.microclimate-tools)
+[![Marketplace](https://img.shields.io/vscode-marketplace/v/IBM.microclimate-tools.svg?label=marketplace&logo=visual-studio-code)](https://marketplace.visualstudio.com/items?itemName=IBM.microclimate-tools)
 [![Build Status](https://img.shields.io/travis/com/microclimate-dev2ops/microclimate-vscode-tools/master.svg?logo=travis&label=build)](https://travis-ci.com/microclimate-dev2ops/microclimate-vscode-tools)
 [![License](https://img.shields.io/badge/License-EPL%202.0-red.svg?label=license&logo=eclipse)](https://www.eclipse.org/legal/epl-2.0/)
 [![Slack](https://img.shields.io/badge/ibm--cloud--tech-blue.svg?logo=slack&label=slack)](https://slack-invite-ibm-cloud-tech.mybluemix.net/)

dev/README.md

@@ -1,6 +1,6 @@
 # Microclimate Developer Tools for VS Code
 
-[![Marketplace](https://img.shields.io/vscode-marketplace/v/IBM.microclimate-tools.svg?label=marketplace)](https://marketplace.visualstudio.com/items?itemName=IBM.microclimate-tools)
+[![Marketplace](https://img.shields.io/vscode-marketplace/v/IBM.microclimate-tools.svg?label=marketplace&logo=visual-studio-code)](https://marketplace.visualstudio.com/items?itemName=IBM.microclimate-tools)
 [![Build Status](https://img.shields.io/travis/com/microclimate-dev2ops/microclimate-vscode-tools/master.svg?logo=travis&label=build)](https://travis-ci.com/microclimate-dev2ops/microclimate-vscode-tools)
 [![License](https://img.shields.io/badge/License-EPL%202.0-red.svg?label=license&logo=eclipse)](https://www.eclipse.org/legal/epl-2.0/)
 [![Slack](https://img.shields.io/badge/ibm--cloud--tech-blue.svg?logo=slack&label=slack)](https://slack-invite-ibm-cloud-tech.mybluemix.net/)