feat(spend money): add the instruction (#212)

* feat(spend money): add the instruction

* feat(spend money): change the explanation

app/views/spends/new.html.slim

@@ -1,7 +1,7 @@
 .columns.is-centered
   .column.is-one-third
     h1.title.is-5.has-text-centered
-      | Spend from account:
+      | Deduct from account:
     .subtitle.is-5.has-text-centered
       = link_to account.name, account_path(account)
     .subtitle.is-6.has-text-centered
@@ -13,7 +13,8 @@
         = link_to 'All Balance', '#', class: 'button is-small is-light all-balance-button', data: { balance: account.balance }
       .field
         = f.text_field :description, class: 'input decscription', placeholder: "Description"
-
+      .notification.is-light
+        | Deduct funds from your kid's balance for expenses like toys, gadgets, entertainment tickets, and other non-budgeted items. In rare cases, use it to fine your child for discipline
       .buttons.is-flex.is-justify-content-flex-end
         = link_to request.referer, class: 'button is-light' do
           span.icon