Update docs

scripts/install.sh

@@ -1,5 +1,8 @@
 #!/usr/bin/bash
 
+### This is a script for installing the latest release
+### of `scaricatore`.
+
 PROJECT_ROOT=$1
 
 if [ -z ${PROJECT_ROOT+x} ]; then
@@ -9,7 +12,13 @@ fi
 
 mkdir -p "${PROJECT_ROOT}"
 cd "${PROJECT_ROOT}" || exit 1
-rm -rf ./*
+
+read -p "We're about to run rm -rf ${PROJECT_ROOT}/*. Are you sure?" -n 1 -r
+if [[ $REPLY =~ ^[Yy]$ ]]
+then
+    rm -rf ./*
+fi
+
 wget https://git.pweapon.org/odo/dl.emersa.it/releases/download/latest/build.tar.gz
 tar -xvf build.tar.gz -C .
 rm build.tar.gz