Mentioned metadataHandler in README.txt

Author: palemieux

README.txt

@@ -92,9 +92,9 @@ ARCHITECTURE
 
 imscJS renders an IMSC1 document in three distinct steps:
 
-* `fromXML(xmlstring, errorHandler)` parses the document and returns a TT object. The latter contains opaque representation of the document 
-and exposes the method `getMediaTimeEvents()` that returns a list of time offsets (in seconds) of the ISD, i.e. the points in time
-where the visual representation of the document change.
+* `fromXML(xmlstring, errorHandler, metadataHandler)` parses the document and returns a TT object. The latter contains opaque
+representation of the document and exposes the method `getMediaTimeEvents()` that returns a list of time offsets (in seconds) of the
+ISD, i.e. the points in time where the visual representation of the document change.
 
 * `generateISD(tt, offset, errorHandler)` creates a canonical representation of the document (provided as a TT object generated by `fromXML()`)
 at a point in time (`offset` parameter). This point in time does not have to be one of the values returned by `getMediaTimeEvents()`. For