Added article on advanced MoveIt manipulator planning (fall) and Gazebo simulator (spring)#226

tomputer-g wants to merge 2 commits intoRoboticsKnowledgebase:masterRoboticsKnowledgebase/roboticsknowledgebase.github.io:masterfrom

tomputer-g:mastertomputer-g/roboticsknowledgebase.github.io:masterCopy head branch name to clipboard