README.md in active_tax-0.1.0 vs README.md in active_tax-0.2.0

@@ -20,15 +20,15 @@
 
 ## Usage
 
 ```ruby
 
-tax_rate = ActiveTax::Tax.rate {
+tax_rate = ActiveTax::Tax.rate({
   address: "6500 Linderson Way",
   city: "",
   zip: "98501",
   state: "WA"
-}
+})
 
 puts tax_rate #=> 0.087
 ```
 
 ## Contributing