add Configuring Preprocessor section to README
add Configuring Preprocessor section to README

nikken1/patentprocessor,funginstitute/patentprocessor,nikken1/patentprocessor,funginstitute/patentprocessor,funginstitute/patentprocessor,nikken1/patentprocessor,yngcan/patentprocessor,yngcan/patentprocessor,yngcan/patentprocessor