Gets asynchronous call results from jobs previously posted to HP IDOL OnDemand's Speech Recognition API. Calls getRequestResults to extract the transcription from the JSON object. Returns a dataframe which was used to update a transcribeR CSV file.
Main user function to POST to HP IDOL OnDemand Speech Recognition API and write Job ID to a transcribeR CSV, a filename. It posts all compatible files in the provided directory. It avoids posting any file that has already been posted according to the transcribeR CSV.