Launch file through rosbridge

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Hello,

I am trying to create web interface for Baxter robot. I've managed to create connection and live camera stream for one of the arms. I have pick and place sequence ready, and I would like to launch it by clicking a button on the web page. I am looking for a way to launch file or rosrun a python script through web page and display the information that I get in command window. I know that "ros-brown-pkg" would be useful for that, but I can't find it anywhere. Anybody came across tutorials or any documentation that might help me ? Anything would be helpful.