visualize_p_weights() : generates a plot of particle positions vs weights (function is called as particles get updated in the scan_received callback)
Merge pull request #28 from greenteawarrior/visualizing

visualize_p_weights()
accidentally comitted plot_tests.py (intermediate test script for playing with matplotlib)
Merge pull request #29 from greenteawarrior/visualizing

accidentally comitted plot_tests.py (intermediate test script for playing with matplotlib)
Making the map accurate
Merge branch 'master' into fast-norm