Merge pull request lnbook#79 from boyerjohn/patch-1

clarification of onion routing

ch01.asciidoc

@@ -11,7 +11,7 @@ They are not required to wait for block confirmations for payments.
 Once a payment arrives, it is final and cannot be reversed.
 Like a standard Bitcoin transaction, a payment on the LN can only be refunded by the recipient.
 While all Bitcoin transactions are stored in the blockchain where they can be tracked, the payments on the LN are off-chain and offer more privacy than on-chain Bitcoin transactions.
-Due to the use of onion routing, which is also implemented in Tor, even the nodes involved in forwarding the payment from sender to recipient do not know for whom they deliver the payment.
+Due to the use of onion routing, an anonymous communication protocol used by Tor, even the nodes involved in a transaction are incapable of identifying the recipient.
 
 === History of the Lightning Network