Implementation of word count

First and foremost thank you for the awesome work that you did creating this project.

Would be possible to add `word count` on this screen:


https://github.com/SubhamTyagi/android-ocr/blob/master/fastlane/metadata/android/en-US/images/phoneScreenshots/2.jpg

Maybe bellow the copy and share buttons?

That way the user has some idea how many words are there in a `scanned` document.
