Add DC-G9M2 as a supported camera (thanks to @nayutaya)

README.md

@@ -35,7 +35,7 @@ Here's a list of camera models currently supported by the library:
 
 | Vendor    | Camera   | Features                    |
 | --------- | -------- | --------------------------- |
-| Panasonic | Lumix S5 | Shutter, LV, AF, MF, Config |
+| Panasonic | S5, DC-G9M2 | Shutter, LV, AF, MF, Config |
 | Sigma     | fp, fp L | Shutter, LV, AF, MF, Config |
 | Ricoh     | Theta S  | Shutter, Config             |
 | WebCam    |          | Shutter, LV, Config         |