Update README.md

Author: sbabcoc

README.md

@@ -6,6 +6,7 @@
 
 ## What You'll Find Here
 
+* [StackTrace](#stacktrace) provides a facility to capture the flow of execution that led to interesting system state transitions.
 * [ExceptionUnwrapper](#exceptionunwrapper) provides methods for extracting the contents of "wrapped" exceptions.
 * [UncheckedThrow](#uncheckedthrow) provides a method that uses type erasure to enable you to throw checked exception as unchecked.
 * [DatabaseUtils](#databaseutils) provides facilities that enable you to define collections of database queries and stored procedures in an easy-to-execute format.
@@ -23,6 +24,12 @@
   * [Finding a JAR File Path](#finding-a-jar-file-path)
   * [Extracting the `Premain-Class` Attribute](#extracting-the-premain-class-attribute)
 
+## StackTrace
+
+The **StackTrace** class extents **Throwable** and it's intended to facilitate capture of the flow of execution that triggered system state changes that may lead to future operation errors. For example, an object that's no longer valid might get used subsequent to the event that caused it to become invalid, or a long-lived object may get discarded without corresponding resources being cleaned up.
+
+For more details, check out the [blog post](https://blog.vanillajava.blog/2021/12/unusual-java-stacktrace-extends.html) that provided the implementation for **StackTrace**.
+
 ## ExceptionUnwrapper
 
 The **ExceptionUnwrapper** class provides methods for extracting the contents of "wrapped" exceptions.
@@ -398,4 +405,4 @@ The **`findJarPathFor`** method will find the absolute path to the JAR file from
 
 The **`getJarPremainClass`** method will extract the `Premain-Class` attribute from the manifest of the indicated JAR file. The value of this attribute specifies the name of a `Java agent` class declared by the JAR.
 
-> Written with [StackEdit](https://stackedit.io/).
+> Written with [StackEdit](https://stackedit.io/).