Publish diffs to diffy.org

Features:

• Publish diffs to diffy.org

Thanks to @pbu88

Use yargs for argument handling

• use latest yargs version to parse args
• add command default when running
• add more example commands
• fix problem with passing arguments to diff (solved by --)
• update README to the new usage

Improve docs

• update README to the new usage
• add more examples

Use yargs for cli arguments parsing

• use latest yargs version to parse args
• add command default when running
• add more example commands
• fix problem with passing arguments to diff (solved by --)

Clean the readme and template

• update readme to follow npm library updates
• remove need for jQuery in template

Fix Y scrollbar and update highlightjs

Bug fixes:

• fix to Y scrollbar on some cases

Updates:

• update highlightjs to version 8.6

Use latest version of the diff2html

Uses latest version of the diff library (diff2html) available