I guess we should get a travis build of this repo?

OCR-Plugin needs to build a JAR file for use with PDFBox. You'll need to load resources from the JAR instead of the disk, e.g. the following won't work:

Properties config = new Properties();
InputStream input = new FileInputStream("src/main/resources/ocr_config.properties");
config.load(input);

Maybe used a system property instead which defaults to "org.apache.pdfbox.ocr.TesseractOCRConnector", as the .properties file won't be easy to edit once it is bundled into a jar - it's not really any different from using a hard-coded constant string.