add test data and test cases for template parsing.#74
wrap the logic of expansion for each row into .preprocess_row routine #74
replace data.frame with data.table in csv preprocessing. #74
fix the default plus sign to pop name
replace double quote with single quote in ITN_Newell csv template
add R/csvTemplate-parser.R
add test cases for plugin framework. #74
add test-pluginFramework.R #74
add registeration of preprocessing methods. #72
fix Rd files. #72