———————————————————————
##User Guide
1st, Main method instantiate objects, User Info, Calculator
2nd, User Info constructor scans user information
3rd, (User) input the plan**(Gold or Silver)**
4th, (User) input used (Standard is in minutes)
5th, (User) input number of lines
6th, Calculator object generate the object that is generated according to the entered plan
7th, Calculator constructor brings entered user information
8th, Generated Plan object brings basic rates, additional rates and basic used
9th, Calculate the total rates
10th, print about basic rates, additional usages, rates according to number of additional lines, total usages and total rates
————————————————————
사용법에 따른 예시 입니다.
###Gold
###Silver
