– updated README with the new AnnuityCalculator's methods

readme.md

@@ -301,6 +301,10 @@ namespace `FinanCalc\Calculators`
 * **getAnnuityPeriodLengthInMonths()** – gets the length of each compounding period in months
 * **getAnnuityPeriodLengthInDays()** – gets the length of each compounding period in days
 * **getAnnuityInterest()** – gets i
+* **getAnnuityLengthInYears()** – gets the length of the annuity in years
+* **getAnnuityLengthInMonths()** – gets the length of the annuity in months
+* **getAnnuityLengthInDays()** – gets the length of the annuity in days
+* **getAnnuityEndDate(DateTime $startDate)** – gets the ending date of the annuity as a DateTime object, based on the starting date passed as a parameter
 * **getAnnuityPresentValue(AnnuityPaymentTypes $annuityType)** – gets the present value of the annuity
   * *AnuityPaymentTypes $annuityType* = determines whether the payments are made either at the beginning or the end of each of the annuity's periods
     [*optional for perpetuities*]

src/Calculators/AnnuityCalculator.php

@@ -193,6 +193,16 @@ public function getAnnuityLengthInDays() {
             );
         }
 
+        /**
+         * @param DateTime $startDate
+         * @return DateTime
+         */
+        public function getAnnuityEndDate(DateTime $startDate) {
+            return TimeSpan
+                ::asDurationWithStartDate($startDate, 0, 0, (int)$this->getAnnuityLengthInDays())
+                ->getEndDate();
+        }
+
         /**
          * @param AnnuityPaymentTypes $annuityType
          * @return null|string
@@ -256,16 +266,6 @@ public function getAnnuityFutureValueInArrears() {
             );
         }
 
-        /**
-         * @param DateTime $startDate
-         * @return DateTime
-         */
-        public function getAnnuityEndDate(DateTime $startDate) {
-            return TimeSpan
-                ::asDurationWithStartDate($startDate, 0, 0, (int)$this->getAnnuityLengthInDays())
-                ->getEndDate();
-        }
-
         /**
          * @param AnnuityPaymentTypes $annuityPaymentType
          * @param AnnuityValueTypes $annuityValueType