Created Debugging against PDFBox (markdown)

Debugging-against-PDFBox.md

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+If you need to debug and compare content stream processing or other file content processing against PDFBox you can clone PDFBox locally and set the following `main` method to launch in the IntelliJ debugger once you have changed the file path to one you want to use locally:
+
+https://github.com/apache/pdfbox/blob/trunk/examples/src/main/java/org/apache/pdfbox/examples/rendering/CustomGraphicsStreamEngine.java#L57
+
+For example:
+
+```
+    public static void main(String[] args) throws IOException
+    {
+        File file = new File("C:\\temp\\pdfs\\", "document with error.pdf");
+
+        try (PDDocument doc = Loader.loadPDF(file))
+        {
+            PDPage page = doc.getPage(0);
+            CustomGraphicsStreamEngine engine = new CustomGraphicsStreamEngine(page);
+            engine.run();
+        }
+    }
+```
+
+You will need to install Maven and do a clean install before opening/using the code in Intellij:
+
+https://github.com/apache/pdfbox#build