updated README.md, PKGBUILD scripts

[mmsaeed509]

updated README.md

• Warning

• Note

updated PKGBUILD scripts

• fixing copying files to the root directory (stop copying files to / )
• fixing "post_install()", "post_remove()" scripts

[mmsaeed509]

• updated Predator-Sense-systemd-git.install script to start/enable service automatically instead of manually after installing module, stop/disable service and remove all module files automatically instead of manually after uninstalling the module
• updated PKGBUILD script to prevent copying files to the root directory/, just store module files in /opt/turbo-fan/

[santarl]

Thank you.

I think bfe4b1c36a1582e1e553e424e980ac2e554bec9f and b4c5368c06f55e2aeabdaf99cfec862e59fb4998 could've been squashed together into a single commit :)

[JafarAkhondali]

@mmsaeed509 Thanks for the PR. I've added you as collaborator so you can merge PRs as well.
@jayrfs Thanks for the review.

Anyways please let's keep peer reviewing any PR before merge.

[mmsaeed509]

thanks for the invitation, I've accepted it It's great to work with you!