modified the README.md file to provide more detailed instructions on how to use k2_client in the context of the robotic_surgery project
Fixed the IP address of the k2_client launch file for demo purposes
Listed rostopics exposed by k2_client in README.md
added reference table of ros nodes and topics
fixed broken markdown in README.md
fixed broken markdown in README.md
Merge branch 'k2-client-docs' of github.com:Somahtr/robotic_surgery into k2-client-docs

Conflicts:
	src/ros/k2_client/README.md
Merge branch 'k2-client-docs' of github.com:Somahtr/robotic_surgery into k2-client-docs

Conflicts:
	src/ros/k2_client/README.md
Fixing conflicts in README.md
Fix conflicts in readme and merge

Conflicts:
	src/ros/k2_client/README.md
updated the readme with catkin_make as the preferred build method rather than rosmake
Merge pull request #13 from Somahtr/k2-client-docs

K2 client docs