simplified polling && jsonrpc payload creation

lib/web3.js

@@ -136,8 +136,8 @@ var setupMethods = function (obj, methods) {
             var args = Array.prototype.slice.call(arguments);
             var call = typeof method.call === 'function' ? method.call(args) : method.call;
             return web3.provider.send({
-                call: call,
-                args: args
+                method: call,
+                params: args
             });
         };
     });
@@ -150,15 +150,15 @@ var setupProperties = function (obj, properties) {
         var proto = {};
         proto.get = function () {
             return web3.provider.send({
-                call: property.getter
+                method: property.getter
             });
         };
 
         if (property.setter) {
             proto.set = function (val) {
                 return web3.provider.send({
-                    call: property.setter,
-                    args: [val]
+                    method: property.setter,
+                    params: [val]
                 });
             };
         }