added README. should be expanded

README.md

+# Example mail client configurations for Autistici/Inventati
+
+These are some examples for a number of command-line mail client, for receiving, sending, and reading emails.
+
+They should be considered guidelines: every user has its own specific configuration, and his specific needs.
+But it you have decide to use such tools, our example are probably sufficient to get you started. More information
+can be obtained from Reading The Fucking Manual.