Fixed missing syntax highlighting and return conditional text. (#51)

* Syntax highlighting was missing 

The switch case example (last example in this chapter) did not have syntax highlighting and improved the text returned when a car brand is provided by the user.

* Update 010-bash-conditionals.md

Co-authored-by: Bobby Iliev <bobby@bobbyiliev.com>

Move slicing sub chapter under arrays (#50)

Add new sponsor to chapter 0

Update sponsors list

heredocs herestring fix (#48)

Added heredocs and herestrings (#47)

* Added heredoc

* Edited heredoc and added herestring

Enhanced Readability of the File (#46)

Started translation in French. (#45)

* Begin French translation.

* Translate 001-introduction-to-bash.md to French.

* Translate 002-bash-structure.md to French.

* Translate 003-bash-hello-world.md to French.

* Translate theme-dark.html to French.

* Import cover (not translated).

* Translate theme-light.html to French.

* Translate 004-bash-variables.md in French.

* Translate 100-bash-wrap-up.md to French.

* Translate 006-bash-comments.md to French.

Modified break and continue statement (#44)

Create ibis.yml