exchange rate: use the BitPay API instead of web scraping
add function header comment
update exchange rate 1/min, as it is changing on BitPay
update readme with completed part
move variables to use nconf
calculate unspent outputs
remove initial block load (since will be doing it anyways by querying last block)
subscribe to block announcements
fix: incorrect equality check for payin/out condition
calculate approximate spendable/unspendable as transactions come in
handle all incoming transactions to find ours
add spreadsheet accounting
account for miners fee
fix typo
fix more typo
Update Readme
access the accounting sheet periodically

This is to avoid the access token to expire, as it seemed to have done.
reduce spreadsheet periodic task from 15 mins to 5 mins

At 15 mins still had expiring token.
Reload spreasheet before sending the update