clean up comments and names for first code review

app.rb

@@ -7,16 +7,12 @@ def initialize
   end
 
   def deposit(amount, date)
-    # updates the current balance of the account
     @balance += amount
-    # adds the transaction to the front of the transactions array
     @transactions.unshift({ date: date, credit: amount, balance: @balance })
   end
 
   def withdraw(amount, date)
-    # updates current balance of account
     @balance -= amount
-    # adds the transaction to the front of the transactions array
     @transactions.unshift({ date: date, debit: amount, balance: @balance })
   end
 

spec/account_spec.rb

@@ -2,7 +2,7 @@
 
 describe BankAccount do
   describe '#print_statement' do
-    it 'prints a blank statement for a new account' do
+    it 'can print a blank statement for a new account' do
       expect do
         BankAccount.new.print_statement
       end.to output("date || credit || debit || balance\n").to_stdout