Update README.md

change duplicate currencyDecimalSeparator option currencyGroupSeparator to correct option name: currencyGroupSeparator

Author: reduxionist

README.md

@@ -50,11 +50,11 @@ $("#numberContainer").animateNumber(Date.now());
 
 **currencyIndicator** (default="$"): The currency symbol to be prepended to the number. Only used if format="currency".
 
-**currencyDecimalSeparator**: The character to be inserted between groups of thousands when displaying currency. The default value is determined by the browser's current locale.
+**currencyGroupSeparator**: The character to be inserted between groups of thousands when displaying currency. The default value is determined by the browser's current locale.
 
 **currencyDecimalSeparator**: The character to be inserted between the integer and decimal values when displaying currency. The default value is determined by the browser's current locale.
 
 **callback** (optional): Callback to be called at end of animation.
 
 ### License
-jquery-animateNumber is free software, and may be redistributed under the MIT-LICENSE.
+jquery-animateNumber is free software, and may be redistributed under the MIT-LICENSE.