feat(installer): Add auto-yes flag to installer and update installation documentation

install.sh

@@ -2,7 +2,45 @@
 
 # NUPST Installer Script
 # Downloads and installs NUPST globally on the system
-# Can be used directly with curl: curl -sSL https://code.foss.global/serve.zone/nupst/raw/branch/main/install.sh | sudo bash
+# Can be used directly with curl:
+# Without auto-installing dependencies:
+#   curl -sSL https://code.foss.global/serve.zone/nupst/raw/branch/main/install.sh | sudo bash
+# With auto-installing dependencies:
+#   curl -sSL https://code.foss.global/serve.zone/nupst/raw/branch/main/install.sh | sudo bash -s -- -y
+# 
+# Options:
+#   -y, --yes     Automatically answer yes to all prompts
+#   -h, --help    Show this help message
+
+# Parse command line arguments
+AUTO_YES=0
+SHOW_HELP=0
+
+for arg in "$@"; do
+  case $arg in
+    -y|--yes)
+      AUTO_YES=1
+      shift
+      ;;
+    -h|--help)
+      SHOW_HELP=1
+      shift
+      ;;
+    *)
+      # Unknown option
+      ;;
+  esac
+done
+
+if [ $SHOW_HELP -eq 1 ]; then
+  echo "NUPST Installer Script"
+  echo "Usage: $0 [options]"
+  echo ""
+  echo "Options:"
+  echo "  -y, --yes     Automatically answer yes to all prompts"
+  echo "  -h, --help    Show this help message"
+  exit 0
+fi
 
 # Check if running as root
 if [ "$EUID" -ne 0 ]; then
@@ -99,13 +137,21 @@ if [ $PIPED -eq 1 ]; then
   # Check if git is installed
   if ! command -v git &> /dev/null; then
     echo "Git is required but not installed."
-    read -p "Would you like to install git now? (Y/n): " install_git_prompt
     
-    if [[ "$install_git_prompt" =~ ^[Nn]$ ]]; then
-      echo "Git installation skipped. Please install git manually and run the installer again."
-      exit 1
-    else
+    if [ $AUTO_YES -eq 1 ]; then
+      echo "Auto-installing git (-y flag provided)..."
       install_git
+    else
+      read -p "Would you like to install git now? (y/N): " install_git_prompt
+      
+      if [[ "$install_git_prompt" =~ ^[Yy]$ ]]; then
+        install_git
+      else
+        echo "Git installation skipped. Please install git manually and run the installer again."
+        echo "Alternatively, you can run the installer with -y flag to automatically install git:"
+        echo "  sudo bash install.sh -y"
+        exit 1
+      fi
     fi
   fi