Add Python installation to chrome/desarrolladores/

- Add steps on how to install Python in several OSs.
- Update step to download the bisect tool in Windows (it is now using
  PowerShell syntax and Python 3 instead of Python 2).
- Minor improvements to the guide.
- Add pymdownx.keys and pymdownx.details MD extensions.

Change-Id: I51e3fd78d8c9acfe3cac9cdf40fe531900ffdaa3
4 files changed
tree: 6781605a1e20f907743e2a2f7897d1a5d43b4370
  1. .github/
  2. docs/
  3. .gitignore
  4. mkdocs.yml
  5. requirements.txt