Description:
This is a simple program that uses list of wifi hotspot locations file from nyc open data. This program will parse the csv and use a sorted 
linked list to store each hotspot. Then the hotspotlist will provide methods to find nearby hotspots , find hotspots by id and find hotspot
in the borough specified. The program gets this information from the user through terminal. The program will ask for the user a few things 
depending on task. For example , the user will be prompted for their latitude , longitude and acceptible distance(in miles) in order to 
compute nearby hotspots. The results from these queries will be printed in a text file. The nearby hotspot will be printed in a file 
called "nearby_results", the find_by_id results will print to "ID_results" and the find_by_borough will print to a file called 
"boro_results". The menu with all the options will be continuously be prompting the user until the exit the program by typing "E".

Background:
This program was originally done as a class project for professor stewart weiss at hunter college. Professor Weiss provided the header file 
for the Hotspot object but the implementation of functions were done by myself. It has since been modified. The project was made in 
order to teach the class about the sorted linked list data structure. A very small portion of the code was found on stack exchange. The
functions double deg2rad(double deg) ,double rad2deg(double rad) and float GetDistance(float lat2 , float lon2). These formulas were found
at "https://stackoverflow.com/questions/10198985/calculating-the-distance-between-2-latitudes-and-longitudes-that-are-saved-in-a". However,
everything else was done by myself.

To run:
To run the program simply move all the files to a common directory and then type "g++ main.cpp" in terminal while in that common directory
To execute type "./a.out nyc_hotspots.csv". The program requires this one argument. If it isnt passed the program will alert the user and 
terminate.