update README.md

Author: karson

README.md

@@ -23,7 +23,7 @@ $mpesa = new \Karson\MpesaPhpSdk\Mpesa();
 $mpesa->setApiKey('your api key');
 $mpesa->setPublicKey('your public key');
 
-This creates transaction between an M-Pesa short code to a phone number registered on M-Pesa.
+//This creates transaction between an M-Pesa short code to a phone number registered on M-Pesa.
 
 $result = $mpesa->c2b($invoice_id, $phone_number, $amount, $reference_id, $shortcode);
 ```