🐛 Corrects xrange to range which fixes #4

Thanks be to @atrezonator for reporting this bug

Author: S0AndS0

inject_javascript/__init__.py

@@ -55,7 +55,7 @@ def return_pdf_data(self, pdf_path = None):
             source_pdf_data = PdfFileReader(fb)
 
         ## Load source PDF into output object
-        for i in xrange(source_pdf_data.getNumPages()):
+        for i in range(source_pdf_data.getNumPages()):
             writable_pdf_data.addPage(source_pdf_data.getPage(i))
 
         if self.verbose > 0: