update readme

README.md

@@ -316,13 +316,12 @@ Specify a placeholder for a definition.
 ### set defaults
 
 Defaults can be set as below.
-
 ```javascript
 $.extend($.inputmask.defaults, {
     'autoUnmask': true
 });
 ```
-However if the property is defined within an alias you need to set it for the alias definition.
+But if the property is defined within an alias you need to set it for the alias definition.
 
 ```javascript
 $.extend($.inputmask.defaults.aliases.numeric , {
@@ -331,7 +330,7 @@ $.extend($.inputmask.defaults.aliases.numeric , {
 });
 ```
 
-However the preferred way to alter properties for an alias is by creating a new alias which inherits from the default alias definition.
+However, the preferred way to alter properties for an alias is by creating a new alias which inherits from the default alias definition.
 
 ```javascript
  $.extend($.inputmask.defaults.aliases, {