1.4: Merge pull request #5 from pasger/patch-1

Update sonos.php

1.3

contribution from HansLe:

• Text to speech not working on a RPI

1.2

contribution from J4nM:

• Allow UTF-8 enconded zonenames
• Bugfix, queue restore after TTS. $radio always evaluated TRUE.
• Added support for TTS messages through Google API in different languages. More flexible for dynamic messages.

1.1

wrong code in method "_actionVolume", seems copy & paste error from m…

…ethod _actionRemove

1.0

v.1.0

missing action stop