Add information about PathUtils

Author: Babcock, Scott

README.md

@@ -161,4 +161,29 @@ public class OpctConfig extends SettingsCore<OpctConfig.OpctValues> {
         return OpctValues.config;
     }
 }
+```
+
+## PathUtils
+
+The **PathUtils** `getNextPath` method provides a method to acquire the next file path in sequence for the specified base name and extension in the indicated target folder.
+
+```java
+
+        /*
+         * This example gets the next path in sequence for base name `artifact` and extension `txt` in the TestNG output directory.
+         * 
+         * For purposes of this example, the output directory already contains the following files: `artifact.txt`, `artifact-3.txt`
+         */
+
+        Path collectionPath = Paths.get(testContext.getOutputDirectory());
+        // => C:\git\my-project\test-output\Default suite
+        
+        Path artifactPath;
+        try {
+            artifactPath = PathUtils.getNextPath(collectionPath, "artifact", "txt");
+            // => C:\git\my-project\test-output\Default suite\artifact-4.txt
+        } catch (IOException e) {
+            provider.getLogger().info("Unable to get output path; no artifact was captured", e);
+            return;
+        }
 ```