README.MD typo fix.

Author: rion18

README.MD

@@ -1,6 +1,6 @@
 # Push Sender #
 
-Push Sender is a Java library that allows sending push messages easily, based on the awesome libraries [gcm-server](https://github.com/theganyo/gcm-server) by [theganyo](https://github.com/theganyo) and [java-apns](https://github.com/notnoop/java-apns) by [notnoop](https://github.com/notnoop). Send push messages with one line of code, forget about the rest, and focus on making on your application's business logic!
+Push Sender is a Java library that allows sending push messages easily, based on the awesome libraries [gcm-server](https://github.com/theganyo/gcm-server) by [theganyo](https://github.com/theganyo) and [java-apns](https://github.com/notnoop/java-apns) by [notnoop](https://github.com/notnoop). Send push messages with one line of code, forget about the rest, and focus on making your application's business logic!
 
 ## Overview ###