fixes typos in comments

Author: janmentzel

README.md

@@ -330,7 +330,7 @@ if($notification->isVerified()) {
     // example as pseudocode, replace with your own code...
 
     // store notification status to your database
-    // Notice: to be 100% reacecondition proof update status to 'payment_approved' has to be done atomically
+    // Notice: to be 100% racecondition proof update status to 'payment_approved' has to be done atomically
     $updatedRows = update_order(array(
       'set'   => array('status'=> 'payment_approved'),
       'where' => array('status'=> 'waiting_for_payment_approval'
@@ -426,7 +426,7 @@ try {
 
 ## Submit Mobile Payment from mobile device
 
-Example Mobile Submit XML your mobile mobile application posts to `$payment->submit_url` to process the payment.
+Example Mobile Submit XML your mobile application posts to `$payment->submit_url` to process the payment.
 
 ```xml
 <payment>

lib/Hypercharge/Transaction.php

@@ -31,7 +31,7 @@ function __construct($p) {
 
 	/**
 	* convinience method
-	* @return string 'sale', 'athorize', 'capture', 'refund', 'void', ...
+	* @return string 'sale', 'authorize', 'capture', 'refund', 'void', ...
 	*/
 	function getType() {
 		return $this->transaction_type;