Add updated Api specification v1.15

[prahal]

Specifications API RFPLAYER V1.15.pdf (2,0 Mo) https://forum.gce-electronics.com/uploads/short-url/1wLsNPTOUzvBj03WcRUD7eXXr10.pdf

thanks to Jarek Polok https://github.com/Doubledom45/HA_Rfplayer_Beta/pull/9

[Aohzan]

can you delete the old pdf file and name the new one rfplayer_api_v1.15.pdf

[Doubledom45]

Bonjour. Je suis sur une version plus élaborée pour le Rfplayer voi rHA_RFPLAYER_TEST

[prahal]

@Aohzan sure, done. Thanks!

[Aohzan]

thank you @prahal