Updated comment within FilePondUploadSystemStorage to better reflect …

…the fix that it is solving.

django_drf_filepond/models.py

@@ -21,10 +21,15 @@
 
 @deconstructible
 class FilePondUploadSystemStorage(FileSystemStorage):
-    """Custom storage class, otherwise Django assumes all files are
-    uploads headed to `MEDIA_ROOT`.
-
-    Subclassing necessary to avoid messing up with migrations (#13).
+    """
+    Subclass FileSystemStorage to prevent creation of new migrations when
+    using a file store location passed to FileSystemStorage using the
+    location attribute. Instead the location is applied dynamically on
+    creation of the subclass avoiding detection of changes by the migration
+    system.
+
+    Addresses #13. Fix is based on fix for similar issue in
+    https://github.com/julen/pootle/commit/fd7800050172549e9f31544843b986691290ddc2
     """
 
     def __init__(self, **kwargs):