Integrating TransactionQueue with client

ethcore/src/client.rs

@@ -123,6 +123,9 @@ pub trait BlockChainClient : Sync + Send {
 	/// Get block total difficulty.
 	fn block_total_difficulty(&self, id: BlockId) -> Option<U256>;
 
+	/// Get address nonce.
+	fn nonce(&self, address: &Address) -> U256;
+
 	/// Get address code.
 	fn code(&self, address: &Address) -> Option<Bytes>;
 
@@ -445,6 +448,10 @@ impl BlockChainClient for Client {
 		Self::block_hash(&chain, id).and_then(|hash| chain.block_details(&hash)).map(|d| d.total_difficulty)
 	}
 
+	fn nonce(&self, address: &Address) -> U256 {
+		self.state().nonce(address)
+	}
+
 	fn code(&self, address: &Address) -> Option<Bytes> {
 		self.state().code(address)
 	}