setAudioVolume as a string

[s3Pol]

Hi,

I just find out that the volume should be set as a string not as int.
I also tested with a string and the set works fine...

"If you look at the setAudioVolume method definition in the audio.getMethodTypes() response:

["setAudioVolume", [{
	"target": "string",
	"volume": "string"
}], ["int"], "1.0"]

The volume needs to be given as a string and not as an integer."

waynehaffenden/bravia#3

[rchl]

I have fixed that in a fork of this repo. Hopefully it will eventually replace original code.