Update README.md

Author: thiendangit

README.md

@@ -7,12 +7,12 @@
 > ### Some libraries use in this boilerplate
 
 <div align="center">
-  <img src="https://reactnative.dev/img/header_logo.svg" width="150" title="hover text">
-  <img src="https://uploads.getpop.org/wp-content/uploads/2019/07/graphql.png" width="165" title="hover text">
-  <img src="https://reactnavigation.org/img/spiro.svg" width="150" title="hover text">
-  <img src="https://iconape.com/wp-content/files/ke/21383/svg/apollo-graphql-compact.svg" width="150" title="hover text">
-  <img src="https://code4developers.com/wp-content/uploads/2018/01/Redux.png" width="180" title="hover text">
-  <img src="https://nativebase.io/assets/img/front-page-icon.png" width="130" title="hover text">
+  <img src="https://reactnative.dev/img/header_logo.svg" width="140" title="hover text">
+  <img src="https://uploads.getpop.org/wp-content/uploads/2019/07/graphql.png" width="155" title="hover text">
+  <img src="https://reactnavigation.org/img/spiro.svg" width="140" title="hover text">
+  <img src="https://iconape.com/wp-content/files/ke/21383/svg/apollo-graphql-compact.svg" width="140" title="hover text">
+  <img src="https://code4developers.com/wp-content/uploads/2018/01/Redux.png" width="170" title="hover text">
+  <img src="https://nativebase.io/assets/img/front-page-icon.png" width="120" title="hover text">
 </div>
 
 ## Structure