Merge pull request 'Add install.sh' (#3) from ztimson-patch-3 into master

Reviewed-on: #3

install.sh

@@ -0,0 +1,20 @@
+#!/bin/bash
+
+set -e
+
+SCRIPT_URL="https://git.zakscode.com/ztimson/fallback-ap/raw/branch/master/pi-fallback-ap.sh"
+INSTALL_PATH="/usr/local/bin/fallback-ap"
+
+if [ "$EUID" -ne 0 ]; then
+    echo "This installer needs to run as root, e.g.:"
+    echo "  curl -sL https://git.zakscode.com/ztimson/fallback-ap/raw/branch/master/install.sh | sudo bash"
+    exit 1
+fi
+
+echo "Downloading fallback-ap..."
+curl -fsSL "$SCRIPT_URL" -o "$INSTALL_PATH"
+
+chmod +x "$INSTALL_PATH"
+
+echo "Running installer..."
+"$INSTALL_PATH" install