Name new example so it shows up properly on godoc.

README.md

@@ -76,7 +76,7 @@ is by no means exhaustive:
 ## Examples
 
 * [ProcessBlock Example]
-  (http://godoc.org/github.com/conformal/btcchain#example-ProcessBlock)  
+  (http://godoc.org/github.com/conformal/btcchain#example-BlockChain-ProcessBlock)  
   Demonstrates how to create a new chain instance and use ProcessBlock to
   attempt to attempt add a block to the chain.  This example intentionally
   attempts to insert a duplicate genesis block to illustrate how an invalid

example_test.go

@@ -18,7 +18,7 @@ import (
 // overview documentation describes, this includes all of the Bitcoin consensus
 // rules.  This example intentionally attempts to insert a duplicate genesis
 // block to illustrate how an invalid block is handled.
-func ExampleProcessBlock() {
+func ExampleBlockChain_ProcessBlock() {
 	// Create a new database to store the accepted blocks into.  Typically
 	// this would be opening an existing database and would not use memdb
 	// which is a memory-only database backend, but we create a new db