Test repo to demonstrate the feasibility of transmitting a user defined python type between two python process in KWIVER

1. Fletch
2. Kwiver

From project source directory

mkdir -p build
cd build
cmake ../ -Dkwiver_DIR=<path to kwiver build directory> -Dfletch_DIR=<path to fletch build directory>

From your build directory

pipeline_runner -p example/sender-receiver.pipe