update tests

test_app/test/simple_storage_spec.js

@@ -32,7 +32,7 @@ contract("SimpleStorage", function() {
   });
 
   it("set storage value", function(done) {
-    SimpleStorage.methods.set(150).send({from: web3.eth.defaultAccount}).then(function() {
+    SimpleStorage.methods.set(150).send().then(function() {
       SimpleStorage.methods.get().call().then(function(result) {
         assert.equal(result, 150);
         done();

test_app/test/token_spec.js

@@ -26,7 +26,7 @@ describe("Token", function() {
       },
       "Test": {
         onDeploy: [
-          "Test.methods.changeAddress('$MyToken').send({from: web3.eth.defaultAccount})"
+          "Test.methods.changeAddress('$MyToken').send()"
         ]
       }
     };