chore: update README.md phoneNumber method

Author: avallete

README.md

@@ -352,10 +352,19 @@ Takes in an [input](#input) and returns a string value resembling a [phone numbe
 copycat.phoneNumber('foo')
 // => '+208438699696662'
 ```
+```js
+copycat.phoneNumber('foo', { prefixes: ['+3319900', '+3363998'], min: 1000, max: 9999 })
+// => '+33639983457'
+```
 
 **note** The strings _resemble_ phone numbers, but will not always be valid. For example, the country dialing code may not exist, or for a particular country, the number of digits may be incorrect. Please let us know if you need valid
 phone numbers, and feel free to contribute :)
 
+#### `options`
+- **`min=10000000000`:** Constrain generated values to be greater than or equal to `min` allow to control the minimum number of digits in the phone number
+- **`max=999999999999999`:** Constrain generated values to be less than or equal to `max` allow to control the maximum number of digits in the phone number
+- **`prefixes`:** An array of strings that should be used as prefixes for the generated phone numbers. Allowing to control the country dialing code.
+
 ### `copycat.username(input)`
 
 Takes in an [input](#input) and returns a string value resembling a username.