add setup.sh installer

setup.sh

@@ -0,0 +1,46 @@
+#!/bin/bash
+
+echo "[i] Installing bookmark-archiver dependencies.  This script may ask for your password in order to install the following:"
+echo "    - Chromium Browser   (see README for Chromium instructions)"
+echo "    - python3"
+echo "    - wget"
+echo "    - curl"
+echo ""
+echo "    You may follow manual setup instructions in README.md instead if you prefer not to run an unknown script"
+echo "    Press Ctrl+C in the next 5 seconds to cancel, or don't do anything to continue..."
+sleep 5
+
+echo ""
+
+if which apt; then
+    # On Linux:
+    echo "[+] Adding Google Chrome apt signing key"
+    wget -q -O - https://dl-ssl.google.com/linux/linux_signing_key.pub | sudo apt-key add -
+    echo "[+] Adding Google Chrome apt source repo"
+    sudo sh -c 'echo "deb [arch=amd64] http://dl.google.com/linux/chrome/deb/ stable main" >> /etc/apt/sources.list.d/google-chrome.list'
+    echo "[+] Updating repo list"
+    apt update
+    echo "[+] Installing Google-Chrome-Beta, python3, wget"
+    apt install google-chrome-beta python3 wget
+elif which brew; then
+    # On Mac:
+    echo "[+] Installing Google-Chrome-Canary, python3, wget"
+    brew install Caskroom/versions/google-chrome-canary wget python3  # or chromium, up to you
+    echo "[+] Linking Google-Chrome-Canary to /usr/local/bin/google-chrome"
+    echo -e '#!/bin/bash\n/Applications/Google\ Chrome\ Canary.app/Contents/MacOS/Google\ Chrome\ Canary "$@"' > /usr/local/bin/google-chrome
+    chmod +x /usr/local/bin/google-chrome
+else
+    echo "[X] Could not find aptitude or homebrew!"
+    echo "If you're on macOS, make sure you have homebrew installed:     https://brew.sh/"
+    echo "If you're on Ubuntu/Debian, make sure you have apt installed:  https://help.ubuntu.com/lts/serverguide/apt.html"
+    echo "(those are the only currently supported systems)"
+    echo "See the README.md for manual setup instructions."
+    exit 1
+fi
+
+# Check:
+google-chrome --version && which wget && which python3 && which curl && echo "[√] All dependencies installed." && exit 0
+
+echo "[X] Failed to install some dependencies"
+echo "    Try the manual setup instructions in the README, or open an issue on github to get help: https://github.com/pirate/bookmark-archiver/issues"
+exit 1