Update README.md

Author: mossplix

README.md

@@ -38,7 +38,7 @@ Add this dependency to your project's POM:
 Add this dependency to your project's build file:
 
 ```groovy
-compile "ug.sparkpl:mtnmomo-java:1.0.0"
+compile "ug.sparkpl:mtnmomo-java:1.2.0"
 ```
 
 # Sandbox Environment
@@ -234,4 +234,4 @@ The library uses [Project Lombok][lombok]. While it is not a requirement, you mi
 [lombok]: https://projectlombok.org
 [lombok-plugins]: https://projectlombok.org/setup/overview
 
-# Thank you. 
+# Thank you.