implement update -y option

update.sh

@@ -4,13 +4,22 @@ cd ~/.dotfiles
 echo "Checking for dotfile updates..." 
 git fetch
 
-if [ $(git rev-parse HEAD) != $(git rev-parse @{u}) ]; 
+if [ $(git rev-parse HEAD) != $(git rev-parse @{u}) ]
 then
+    if [ "$1" == -y ]
+    then
+        echo "Updating..."
+        git pull >> /dev/null
+        echo "Updated successfully"
+    else
         read -p "Dotfiles can be updated. Do you want to proceed? (y/n) " choice
-    case "$choice" in
-        y|Y ) echo "Updating..." && git pull >> /dev/null && echo "Updated successfully";;
-        * ) echo "Skipping";;
-    esac
+        if [ "$choice" = "y" ]
+        then
+            echo "Updating..."
+            git pull >> /dev/null
+            echo "Updated successfully"
+        fi
+    fi
 else
     echo "Dotfiles are up-to-date"
-fi;
+fi