added outline of sort function and added tolower transform when storing data
added outline of sort function and added tolower transform when storing data

devs4v/devs4v-information-retrieval15,devs4v/devs4v-information-retrieval15,devs4v/devs4v-information-retrieval15,devs4v/devs4v-information-retrieval15,devs4v/devs4v-information-retrieval15,devs4v/devs4v-information-retrieval15,devs4v/devs4v-information-retrieval15,devs4v/devs4v-information-retrieval15