Fix README image paths and dot description

Fixed paths to images for new repository dotfile delineation. Added
quick readme blurb explaining differece of normal and dotfile
directories.
Readme still explained old bare-repository directory structure. Rewrote
sentences to conform to new structure.

Removed underscore from bootstrap directory, since the repository does
not organize itself through underscore prefixes anymore.
Fixed package gathering git-hook to respect new bootstrap directory.

bootstrap/install_packages.sh

@@ -0,0 +1,92 @@
+#!/bin/bash
+#
+# Simple app bootstrapping script
+
+#=== main function ============================================================
+# NAME:         main
+# DESCRIPTION:  Display usage information for this script.
+# PARAMETERS:   see usage function
+#==============================================================================
+packages="${BOOTSTRAP_PACKAGES:-packages.txt}"
+
+main() {
+  local cmd=""
+  local ret=0
+
+  case "$1" in
+  -v | --version)
+    printf "Package bootstrap script.\n\n©Marty Oehme\n\nVersion: 0.3\n"
+    ;;
+  -h | --help)
+    printf "Usage: install [-f|--force][-v|--version][-h|--help]\n\n-f     Do not ask for any confirmations but force update and installation.\n"
+    ;;
+  -f | --force)
+    install true
+    ;;
+  *)
+    install false
+    ;;
+  esac
+  shift
+
+  $cmd "$@"
+  ret=$((ret + $?))
+  exit $ret
+}
+
+install_yay() {
+  # check for existing yay installation
+  if type yay >/dev/null 2>&1; then
+    echo "Existing yay installation found ..........................................."
+    return
+  fi
+
+  # use tmp dir to make yay
+  target=$(mktemp -d)
+  git clone https://aur.archlinux.org/yay.git "$target"
+  cd "$target" || exit
+  makepkg -si
+}
+
+update_repos() {
+  unattended="$1"
+  if "$unattended"; then
+    yay -Sqyy --noconfirm
+  else
+    yay -Syy
+  fi
+}
+
+install_packages() {
+  unattended="$1"
+  if "$unattended"; then
+    yay -Squ --noconfirm --needed - <"$packages"
+  else
+    yay -Su --needed - <"$packages"
+  fi
+}
+
+check_consent() {
+  echo "This will take a while and install many packages. Proceed [y/N]?"
+  read -r yes
+  if [[ "$yes" != y* ]]; then
+    echo "Exiting."
+    exit
+  fi
+}
+
+install() {
+  unattended=$1
+  echo "Beginning package bootstrap ..............................................."
+  if ! "$unattended"; then
+    check_consent
+  fi
+  echo "Installing yay ............................................................"
+  install_yay
+  echo "Installing apps ..........................................................."
+  update_repos "$unattended"
+  install_packages "$unattended"
+  echo "Done ......................................................................"
+}
+
+main "$@"