Add constructor calls to fix test build errors

Author: jonah-williams

ValidatorTests/ValidatorTests.swift

@@ -35,15 +35,15 @@ class ValidatorTests: XCTestCase {
     let LEN_20 = "Paint the cat orange"
 
     let REGISTER_TXT_FIELD = UITextField()
-    let REGISTER_VALIDATOR = Validator
+    let REGISTER_VALIDATOR = Validator()
     let REGISTER_RULES = [Rule]()
 
     let UNREGISTER_TXT_FIELD = UITextField()
-    let UNREGISTER_VALIDATOR = Validator
+    let UNREGISTER_VALIDATOR = Validator()
     let UNREGISTER_RULES = [Rule]()
 
     let UNREGISTER_ERRORS_TXT_FIELD = UITextField()
-    let UNREGISTER_ERRORS_VALIDATOR = Validator
+    let UNREGISTER_ERRORS_VALIDATOR = Validator()
 
     let ERROR_LABEL = UILabel()