initial working edvo package

	modified:   CMakeLists.txt
	new file:   cfg/EDVO.cfg
	modified:   src/DirectVisualOdometry.h
	modified:   src/RGBDVONode.cpp
	modified:   src/RGBDVONode.h
	modified:   src/edvo.cpp
added dynreconfigure config file

	new file:   resources/edvo.dyncfg
using catkin_EXPORTED_TARGETS

	modified:   CMakeLists.txt
using namespace of node for tf frame id

	modified:   src/RGBDVONode.h
launch files for compositional approaches

	new file:   launch/esm.launch
	new file:   launch/fc.launch
	new file:   launch/ic.launch