Added references to eea_sendTransaction (#1730)

Signed-off-by: Adrian Sutton <adrian.sutton@consensys.net>

docs/Reference/Pantheon-API-Methods.md

@@ -3785,6 +3785,10 @@ data using `eea_sendRawTransaction`.
     For production systems requiring private transactions, we recommend using a network 
     with a consensus mechanism supporting transaction finality. For example, [IBFT 2.0](../Consensus-Protocols/IBFT.md). 
     
+    Pantheon does not implement [`eea_sendTransaction`](../Using-Pantheon/Account-Management.md). 
+        
+    [EthSigner](https://docs.ethsigner.pegasys.tech/en/latest/) provides transaction signing and implements [`eea_sendTransaction`](https://docs.ethsigner.pegasys.tech/en/latest/Using-EthSigner/Using-EthSigner/#eea_sendtransaction).
+
 **Parameters**
 
 `data` -  Signed RLP-encoded private transaction. For example:

docs/Using-Pantheon/Account-Management.md

@@ -11,9 +11,11 @@ Pantheon doesn't support key management inside the client. Use:
 
 In Pantheon, you can use the JSON-RPC methods:
 
- * [eth_getBalance](../Reference/Pantheon-API-Methods.md#eth_getbalance) to obtain the account balance
- * [eth_sendRawTransaction](../Reference/Pantheon-API-Methods.md#eth_sendrawtransaction) to transfer ether or create and interact with contracts (for more information, refer to [Transactions](Transactions/Transactions.md#transactions)).  
+ * [`eth_getBalance`](../Reference/Pantheon-API-Methods.md#eth_getbalance) to obtain the account balance
+ * [`eth_sendRawTransaction`](../Reference/Pantheon-API-Methods.md#eth_sendrawtransaction) to transfer ether or create and interact with contracts (for more information, refer to [Transactions](Transactions/Transactions.md#transactions)).  
+ * [`eea_sendRawTransaction`](../Reference/Pantheon-API-Methods.md#eea_sendrawtransaction) to send [private transactions](../Privacy/Private-Transactions/Creating-Sending-Private-Transactions.md).
  
 !!! tip 
-    [EthSigner](http://docs.ethsigner.pegasys.tech/en/latest/) implements [`eth_sendTransaction`](http://docs.ethsigner.pegasys.tech/en/latest/Using-EthSigner#eth_sendTransaction).
+    [EthSigner](http://docs.ethsigner.pegasys.tech/en/latest/) implements [`eth_sendTransaction`](http://docs.ethsigner.pegasys.tech/en/latest/Using-EthSigner/Using-EthSigner/#eth_sendtransaction)
+    and [`eea_sendTransaction`](http://docs.ethsigner.pegasys.tech/en/latest/Using-EthSigner/Using-EthSigner/#eea_sendtransaction).