Added simple installer

install.zsh

@@ -0,0 +1,98 @@
+#!/usr/bin/env zsh
+setopt PIPEFAIL
+setopt EXTENDED_GLOB
+# setopt XTRACE prompt_subst
+
+## Ensure colors are available.
+autoload -U colors && colors
+
+PREZTO_DIRECTORY="${ZDOTDIR:-$HOME}/.zprezto"
+PREZTO_GIT_REMOTE="https://github.com/ezintz/prezto.git"
+
+function is_osx {
+  if [[ "$OSTYPE" != darwin* ]]; then
+    return 1
+  fi
+
+  return 0
+}
+
+function is_linux {
+  if [[ "$OSTYPE" != linux* ]]; then
+    return 1
+  fi
+
+  return 0
+}
+
+function print_header {
+  printf "\n${fg[blue]}%s${reset_color}\n" "$@"
+}
+
+function print_success {
+  printf "${fg[green]}✓ %s${reset_color}\n" "$@"
+}
+
+function print_notice {
+  printf "${fg[yellow]}i %s${reset_color}\n" "$@"
+}
+
+function print_warning {
+  printf "${fg[magenta]}! %s${reset_color}\n" "$@"
+}
+
+function print_error {
+  printf "${fg[red]}x %s${reset_color}\n" "$@"
+}
+
+function print_question {
+  printf "${fg[cyan]}? %s${reset_color}\n" "$@"
+}
+
+function seek_confirmation {
+  print_warning "$@"
+  read -q "REPLY?${fg[cyan]}? Continue? (y/n)${reset_color} " -n 1
+  printf "\n"
+}
+
+function is_confirmed {
+  if [[ "$REPLY" =~ ^[Yy]$ ]]; then
+    return 0
+  fi
+
+  return 1
+}
+
+function cleanup {
+  print_header "Cleanup"
+}
+
+TRAPINT() {
+  print ""
+  print_error "Caught SIGINT, aborting."
+  cleanup
+  return $(( 128 + $1 ))
+}
+
+print_header "Prezto — Instantly Awesome Zsh"
+seek_confirmation "Do you want to proceed with the installation"
+if is_confirmed; then
+  print_notice "Cloning prezto to $PREZTO_DIRECTORY ..."
+  if [[ ! -d $PREZTO_DIRECTORY ]]; then
+     git clone --recursive "$PREZTO_GIT_REMOTE" "$PREZTO_DIRECTORY"
+  fi
+  print_success "... done!"
+
+  print_notice "Creating sym links for prezto rcfiles ..."
+  for rcfile in "$PREZTO_DIRECTORY"/runcoms/^README.md(.N); do
+    tarfile="${ZDOTDIR:-$HOME}/.${rcfile:t}"
+    if [[ -f "$tarfile" ]]; then
+      print_warning "$tarfile already exists, creating a backup as ${tarfile}.backup"
+      mv "$tarfile" "${tarfile}.backup"
+    fi
+    ln -s "$rcfile" "$tarfile"
+  done
+  print_success "... done!"
+else
+  print_error "Installation aborted."
+fi