Add support for MemoizeExpiring

README.md

@@ -34,23 +34,30 @@ These both work the same way. Subsequent calls to a memoized method without para
 I generally consider it an anti-pattern for a call to a `get` accessor to trigger an expensive operation.  Simply adding `Memoize()` to a `get` allows for seamless lazy-loading.
 
 ```typescript
-import {Memoize} from 'typescript-memoize';
+import {Memoize,MemoizeExpiring} from 'typescript-memoize';
 
 class SimpleFoo {
 
-	// Memoize a method without parameters
-	@Memoize()
-	public getAllTheData() {
-		// do some expensive operation to get data
-		return data;
-	}
-
-	// Memoize a getter
-	@Memoize()
-	public get someValue() {
-		// do some expensive operation to calculate value
-		return value;
-	}
+    // Memoize a method without parameters
+    @Memoize()
+    public getAllTheData() {
+       // do some expensive operation to get data
+       return data;
+    }
+
+    // Memoize a method and expire the value after some time
+    @MemoizeExpiring(5000)
+    public getDataForSomeTime() {
+        // do some expensive operation to get data
+        return data;
+    }
+
+    // Memoize a getter
+    @Memoize()
+    public get someValue() {
+        // do some expensive operation to calculate value
+        return value;
+    }
 
 }
 ```