Added standard bundle installation instructions

| Q             | A
| ------------- | ---
| Doc fix?      | no
| New docs?     | yes
| Applies to    | -
| Fixed tickets | #4157

Note: if you think that this draft is awful, please say it so and we'll rewrite it from scratch.
Thus, having syntax highlighting in the code snippets of the readme is much better. So I'm +1 for keeping them (the reason to use Markdown as format is related to Github anyway)