Breakout of ConnectionSubSys from rosmod/lib-pnp2

Install Build Tools

sudo apt-get install python-catkin-tools

Build Library:

cd
mkdir catkin_ws #if a workspace does not already exist
cd catkin_ws
git clone https://github.com/rosmod/lib-connection.git src/lib-connection
catkin build connection

Update Library:

cd ~/catkin_ws
catkin clean connection
cd src/lib-connection
git pull
cd ..
catkin build connection

Rosmod Source Library Setup:

1. In this github repo navigate to releases, right click on connection.zip (not the source code zip!) and select `Copy link address'
2. In a rosmod project, drag in a new source library to the software model
3. Paste the link in the url attribute
4. Name the source library connection
5. Drag the library into the set editor of any component that uses it
6. In the forwards section of the component add #include "connection/Connection.h