* added ansi_term example
* added ansi and ansiterm to dictionary
* Delete ansi_terminal.md
* Update arguments.md
* link shows but does not work
* bug fix [link now shows and works perfectly]
* highlighted `` ansi-term name
* resolved flaws
* fixed issues with travis CI
* Added support for additional linters (html-proofer link checker)
- added additional test matrix item just for linters
- install and build mdbook only when needed to speedup CI
- reorganized the travis scripts
* Added spellchecking script from rust-book to CI
also fixed minor typos
* updated and moved serde_json links to propper position
* move link checking to link-checker
