Add link to Awesome ZSH plugins list

* Add link to Awesome ZSH plugins list
* A couple entries had trailing spaces inconsistent with the rest of the
  document, so trimmed those spaces

- signed-off-by: Joe Block <jpb@unixorn.net>

Update README.md

Add Qubes OS to list of operating systems.

Update README.md

- signed-off-by: trimstray <trimstray@gmail.com>

- signed-off-by: trimstray <trimstray@gmail.com>

- signed-off-by: trimstray <trimstray@gmail.com>

Added machine-learning-algorithms

Add more private search engines to the list

Added: 
- DuckDuckGo
- Swisscows
- Disconnect Search
- MetaGer

- signed-off-by: trimstray <trimstray@gmail.com>

- signed-off-by: trimstray <trimstray@gmail.com>

- signed-off-by: trimstray <trimstray@gmail.com>

- signed-off-by: trimstray <trimstray@gmail.com>

A link to the HTTP response header database.

A curated list of all machine learning algorithms and deep learning algorithms grouped by category.

Add SpaceVim

- signed-off-by: trimstray <trimstray@gmail.com>

- signed-off-by: trimstray <trimstray@gmail.com>

- signed-off-by: trimstray <trimstray@gmail.com>

- signed-off-by: trimstray <trimstray@gmail.com>

- signed-off-by: trimstray <trimstray@gmail.com>

- signed-off-by: trimstray <trimstray@gmail.com>

- signed-off-by: trimstray <trimstray@gmail.com>

Removed the extra </p> tag

cheat.sh added in All-in-one Cheat sheet section

- signed-off-by: trimstray <trimstray@gmail.com>

I have added cheat.sh in All-in-one section. 
This link is very useful to get all-cheats in one place.

- signed-off-by: trimstray <trimstray@gmail.com>

- signed-off-by: trimstray <trimstray@gmail.com>

- signed-off-by: trimstray <trimstray@gmail.com>

- signed-off-by: trimstray <trimstray@gmail.com>

- signed-off-by: trimstray <trimstray@gmail.com>

- signed-off-by: trimstray <trimstray@gmail.com>

- signed-off-by: Julien-Broyard <broyard.dev@gmail.com>

- signed-off-by: trimstray <trimstray@gmail.com>