formmating and using Recognizer intents registered on the system

confirms activity is registered for RECOGNIZE_SPEECH intent, accepts Prompt and returns Results and confidence fixes https://github.com/batumi/KartuliSpeechRecognition/issues/13
mPreviousPartialHypotheses can be null
using prompt from caller and setting recognition result from modifications

of the orthography or after recognition was completed. fixes https://github.com/batumi/KartuliSpeechRecognition/issues/14
upgraded to sdk 20