Update the CPP article to talk about initialization. (#136)
Update the CPP article to talk about initialization. (#136)

* Update the CPP article to talk about initialization.

Signed-off-by: Chris Lalancette <281cd07d7578d97c83271fbbf2faddb83ab3791c@openrobotics.org>

* runtime -> generator.

This reflects the current state of the code.

Signed-off-by: Chris Lalancette <281cd07d7578d97c83271fbbf2faddb83ab3791c@openrobotics.org>

gbiggs/design,ros2/design,ros2/design,ros2/design,ros2/design,gbiggs/design,gbiggs/design,gbiggs/design,gbiggs/design,ros2/design