added eth_sign

lib/web3/methods/eth.js

@@ -202,6 +202,13 @@ var methods = function () {
         inputFormatter: [formatters.inputTransactionFormatter]
     });
 
+    var sign = new Method({
+        name: 'sign',
+        call: 'eth_sign',
+        params: 2,
+        inputFormatter: [formatters.inputAddressFormatter, null]
+    });
+
     var call = new Method({
         name: 'call',
         call: 'eth_call',
@@ -264,6 +271,7 @@ var methods = function () {
         estimateGas,
         sendRawTransaction,
         sendTransaction,
+        sign,
         compileSolidity,
         compileLLL,
         compileSerpent,