BH1750 Light sensor. Unable to find component

Hello,

I’m having a problem including BH1750 light sensor to home assistant. I can see from the command line that the sensor is detected in the i2c bus but home assistant component does not seem to exist or something. I tried to find the component from the pi folders but seems that I’m quite bad locating the folders. Even with google.

I made a fresh installation with Hassbian 1.31. Running on Raspberry 3B.

When I include this in the configuration.yaml
sensor:
- platform: BH1750
name: ‘Living room Ambient’
i2c_address: 0x23

I get an error message to HA log:
ERROR (MainThread) [homeassistant.loader] Unable to find component sensor.BH1750

Everything I took is from this component page:

Any ideas what seems to be the problem?

EDIT: seems that I couldnt figure out either how the yaml highligting works. But the lines under sensor are indented correctly on my configuration file.