Set initial README

README.md

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+# Configuration synchronization
+## Version 2
+
+conf-sync's purpose is to update regularly all configuration files, scripts or service files that are installed on a
+system.
+
+### Introduction
+Version 2 implementation works roughly as follows:
+* the script runs daily;
+* it browses all local Git repositories (in a specific directory) and run `git pull`;
+  * if changes are detected, it runs install script (if present).
+
+### Files
+* `conf-sync.sh`
+#### Installation
+* `install.sh`