GoPro Hero 4 very basic API is implemented:
- shutter - /gp/gpControl/command/shutter
- change mode - /gp/gpControl/command/mode
- status - /camera/se
- media library - /videos/DCIM/100GOPRO/
- image preview - /videos/DCIM/100GOPRO/GOPR.*?.THM
Use the first argument to specify the port node server.js 8900