API CHANGE: Reorder parameters for some APIs.

The APIs that have changed are those that take an output pointer and an
input count in the format of "some_read_function(handle, pBuf, count)".

The updated APIs include:
  * mal_decoder_read_pcm_frames()
  * mal_pcm_converter_read()

Some APIs are scheduled to be replaced in a future version so I have
decided not to replace this at this time since it will be a waste of
time to do so.

README.md

@@ -81,7 +81,7 @@ void data_callback(mal_device* pDevice, void* pOutput, const void* pInput, mal_u
         return;
     }
 
-    mal_decoder_read_pcm_frames(pDecoder, frameCount, pOutput);
+    mal_decoder_read_pcm_frames(pDecoder, pOutput, frameCount);
 
     (void)pInput;
 }
@@ -189,7 +189,7 @@ decoding backend.
 Data is read from the decoder as PCM frames:
 
 ```
-mal_uint64 framesRead = mal_decoder_read_pcm_frames(pDecoder, framesToRead, pFrames);
+mal_uint64 framesRead = mal_decoder_read_pcm_frames(pDecoder, pFrames, framesToRead);
 ```
 
 You can also seek to a specific frame like so:

examples/simple_playback.c

@@ -17,7 +17,7 @@ void data_callback(mal_device* pDevice, void* pOutput, const void* pInput, mal_u
         return;
     }
 
-    mal_decoder_read_pcm_frames(pDecoder, frameCount, pOutput);
+    mal_decoder_read_pcm_frames(pDecoder, pOutput, frameCount);
 
     (void)pInput;
 }