Update phone.js

Removing 10 character limit from US phone number. Due to this, the +1 prefix was not being allowed. I guess, that was incorrect.

Author: skr968

src/js/validator/phone.js

@@ -195,7 +195,7 @@
                     // Area code may be delimited with (), & sections may be delimited with . or -
                     // Test: http://regexr.com/38mqi
                     value   = value.replace(/\D/g, '');
-                    isValid = (/^(?:(1\-?)|(\+1 ?))?\(?(\d{3})[\)\-\.]?(\d{3})[\-\.]?(\d{4})$/).test(value) && (value.length === 10);
+                    isValid = (/^(?:(1\-?)|(\+1 ?))?\(?(\d{3})[\)\-\.]?(\d{3})[\-\.]?(\d{4})$/).test(value);
                     break;
             }