start with Cost-Utility based Exploration
add assignBestFrontier() method to map.cc, map.h : done
complete utility-cost based Frontier Exploration : Success - plotted it
add screenshot gnuplot of Utility-Cost based Frontier Exploration coverage
Quit/Pause program by User Key input 'q', 'p' update
update Random Waypoint with a map : success
use system clock() function for plotting as x-axis in coverage plot : success - compare coverage over time for Random Waypoint, Random Walk and Frontier based exploration