Update README.md

README.md

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 # kiss-glibc-repo
 This is a repository containing an unofficial port of KISS Linux to the x86_64 architecture based on Glibc.
 
-# Installation
+# Installation as chroot
 
-TODO
+The chroot script and tarball can be downloaded from the Releases page of this respository.
+
+Unpack the tarball in a directory of your choice and then chroot in that directory. 
+
+# Installation as main system
+
+It has not been tested as a main system. My use is for a chroot, so I don't know
+if it works as a main system. Be careful, like testing it on a virtual machine before
+installing this version on a productive computer. 
+
+# Notes 
+
+## Repositories
+
+To ease maintenance the build files from the KISS distribution are reused. With this version, `python` and `gawk`
+are necessary (dependencies of glibc). Python is in the extra repository and `gawk` in community. So community is
+enabled by default. 
+
+## KISS paths
+
+To avoid creating new builds of some packages, only packages with specific build instruction for glibc are available. 
+The other are reused from the KISS distribution. So be careful in your KISS paths (`/etc/profile.d/kiss_path.sh`).