Install: Replace Homebrew with Linuxbrew formula
Homebrew is not a package manager for Linux, but for macOS.
[Linuxbrew](http://linuxbrew.sh) on the other hand is a fork of
Homebrew that should work on Linux.
## Linux
-For the following Linux Distributions 0.8 packages are available:
+For the following Linux distributions and package managers 0.8 packages are available:
- [Arch Linux](https://aur.archlinux.org/packages/elektra/)
- - [Homebrew](http://formulae.brew.sh/formula/elektra)
- [Openwrt](https://github.com/openwrt/packages/tree/master/libs/elektra)
- [OpenSuse](https://software.opensuse.org/package/elektra)
- [Debian](https://packages.debian.org/de/jessie/libelektra4)
- [Ubuntu](https://launchpad.net/ubuntu/+source/elektra)
- [Gentoo](http://packages.gentoo.org/package/app-admin/elektra)
- [Linux Mint](https://community.linuxmint.com/software/view/elektra-bin)
+ - [LinuxBrew](https://github.com/Linuxbrew/homebrew-core/blob/master/Formula/elektra.rb)
Available, but not up-to-date:
