Merge pull request #20 from valeRB/master

Save detected objects for phase2
Merge pull request #1 from RoboGroup3/master

Updates
add node to get the costmap
Merge pull request #21 from qiqiapple/master

add node to get the costmap
change the wall value from 150 to -106
Merge pull request #22 from qiqiapple/master

change the wall value from 150 to -106
Some changes
Merge branch 'master' of https://github.com/RoboGroup3/mapping
Merge pull request #6 from RoboGroup3/master

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