#FLXFluidTextView
FLXFluidTextView is a UITextView subclass that automatically adjusts its frame based on its content size.
The properties maximumHeight and minimumHeight can be set to place limits on the text view's fluidity. Additionally, maximumNumberOfLines and minimumNumberOfLines can be set to automatically set the maximumHeight and minimumHeight properties, respectively, based upon the line height of the text view's font.