sdbus++: move default directory

With example moved to the root directory and there being an explicit
makefile for the example calculator application, there is no need to
have sdbus++ default to 'example'.

Change-Id: I2a20883d7ea88b56e1bd073ef395c236215a4132
Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
diff --git a/tools/sdbus++ b/tools/sdbus++
index 28c2858..26969f3 100755
--- a/tools/sdbus++
+++ b/tools/sdbus++
@@ -19,7 +19,7 @@
 
     parser = argparse.ArgumentParser(description='Process sdbus++ YAML files.')
 
-    parser.add_argument('-r', '--rootdir', dest='rootdir', default='example',
+    parser.add_argument('-r', '--rootdir', dest='rootdir', default='.',
                         type=str, help='Location of files to process.')
     parser.add_argument('-t', '--templatedir', dest='templatedir',
                         default=os.path.join(module_path, 'templates'),