Update README.md

Author: tigercosmos

README.md

@@ -9,9 +9,9 @@ The more powerful logger for NodeJS.
 
 ## Demo
 
-<img alt="Demo" src="https://raw.githubusercontent.com/tigercosmos/node-color-log/master/assets/demo-log.png" width="500">
+<img alt="Demo" src="https://raw.githubusercontent.com/tigercosmos/node-color-log/master/assets/demo-log.png" width="800">
 
-<img alt="Demo" src="https://raw.githubusercontent.com/tigercosmos/node-color-log/master/assets/demo-color.png" width="500">
+<img alt="Demo" src="https://raw.githubusercontent.com/tigercosmos/node-color-log/master/assets/demo-color.png" width="800">
 
 ## Usage
 Install package in your project: