added a new extra lesson for Wget, cURL, and lftp for file transfer basics with http. Renamed 10-why.md to 11-why.md, and updated the index.md file to reflect lesson and file changes
Added a heading for Wget for 10-file_transfer.md
Added clarification that the output will be similar. It will not be exact since the output was manufactured from operating on a currently existing file in the softwarecarpentry/bc repository
fixed typo by operating on prodoce
added comment about refering to the man page for other protocols