Update app.py

app.py

@@ -149,7 +149,7 @@ def main():
                     if file.type == 'text/plain':
                         #file is .txt
                         raw_text += get_text_file(file)
-                    elif file.type == 'application/octet-stream':
+                    elif file.type in ['application/octet-stream', 'application/pdf']:
                         #file is .pdf
                         raw_text += get_pdf_text(file)
                     elif file.type == 'text/csv':