Merge pull request bitcoin#530 from Giszmo/patch-1

small typo in bip47

Author: luke-jr

bip-0047.mediawiki

@@ -174,7 +174,7 @@ Note: this procedure is used if Bob uses a version 1 payment code (regardless of
 ## Bob selects the designated pubkey: <pre>A, where A = aG</pre>
 ## Bob selects the private key associated with his notification address: <pre>b</pre>
 ## Bob calculates a secret point: <pre>S = bA</pre>
-## Bob calculates the binding factor: <pre>s = HMAC-SHA512(x, o)</pre>
+## Bob calculates the blinding factor: <pre>s = HMAC-SHA512(x, o)</pre>
 ### "x" is the x value of the secret point
 ### "o" is the outpoint being spent by the designated input.
 ## Bob interprets the 80 byte payload as a payment code, except:
@@ -218,7 +218,7 @@ The following actions are recommended to reduce this risk:
 
 ====Sending====
 
-# Each time Alice wants to initiate a transaction to Bob, Alice derives a unique P2PKH address for the transaction using ECDH follows:
+# Each time Alice wants to initiate a transaction to Bob, Alice derives a unique P2PKH address for the transaction using ECDH as follows:
 ## Alice selects the 0th private key derived from her payment code: <pre>a</pre>
 ## Alice selects the next unused public key derived from Bob's payment code, starting from zero: <pre>B, where B = bG</pre>
 ### The "next unused" public key is based on an index specific to the Alice-Bob context, not global to either Alice or Bob