updating version in readme file

README.md

@@ -95,7 +95,7 @@ remove the dots and make the first characters upper case. For example, `jthumbna
 <dependency>
   <groupId>io.github.makbn</groupId>
   <artifactId>jthumbnail</artifactId>
-  <version>2.1.0</version>
+  <version>2.2.0</version>
 </dependency>
 ```
 
@@ -106,7 +106,7 @@ remove the dots and make the first characters upper case. For example, `jthumbna
 **Step 1**. Add the dependency to the `build.gradle` file:
 
 ```gradle
-compile "io.github.makbn:jthumbnail:2.1.0"
+compile "io.github.makbn:jthumbnail:2.2.0"
 ```
 
 ## TODO