Add prepare script for system installation

prepare.sh

@@ -0,0 +1,24 @@
+#!/bin/bash
+
+sudo -s
+
+# Silkaj + Duniterpy
+apt install python3-pip
+apt install libsodium18
+pip3 install silkaj
+
+
+# Install IPFS
+cd /usr/src/
+wget https://dist.ipfs.io/ipfs-update/v1.5.2/ipfs-update_v1.5.2_linux-arm.tar.gz
+tar xvzf ipfs-update_v1.5.2_linux-arm.tar.gz
+cd ipfs-update
+./install.sh
+ipfs-update install latest
+
+# Install gammu
+apt install ppp screen git python3-pip minicom gammu gammu-smsd
+usermod -aG gammu pi
+
+
+exit 0