Update VatCalculator.php (#182)

* Update VatCalculator.php

Added a method to return all tax rates for a given country code

* Update README.md

Updated with the 'getTaxRatesForCountry' method

README.md

@@ -87,6 +87,14 @@ $netPrice = VatCalculator::getNetPrice(); // 24.00
 $taxValue = VatCalculator::getTaxValue(); // 4.56
 ```
 
+### Receive all tax rates for a given country
+
+To receive an array with all available tax rates for a given country, use the `getTaxRatesForCountry` method.
+
+```php
+VatCalculator::getTaxRatesForCountry('DE'); // ["high" => 0.19, "low" => 0.07]
+```
+
 ### Validate EU VAT numbers
 
 Prior to validating your customers VAT numbers, you can use the `shouldCollectVAT` method to check if the country code requires you to collect VAT

src/VatCalculator.php

@@ -728,6 +728,17 @@ public function getTaxRateForCountry($countryCode, $company = false, $type = nul
         return $this->getTaxRateForLocation($countryCode, '', $company, $type);
     }
 
+    /**
+     * Returns all tax rates for the given country code.
+     *
+     * @param  string  $countryCode
+     * @return array
+     */
+    public function getTaxRatesForCountry($countryCode)
+    {
+        return $this->taxRules[$countryCode]['rates'];
+    }
+
     /**
      * Returns the tax rate for the given country code.
      * If a postal code is provided, it will try to lookup the different