YTDownloader v1.2

Added file name option

Added default values to output path and file name

YTDownloader v1.1.1

Removed version from filename

YTDownloader v1.1

Added output location option

Changed README.md

YTDownloader v1.0

File ending with .py opens a command prompt and runs the script.
File ending with .pyw does the same without opening a command prompt.