make VestedToken test deterministic

test/helpers/timer.js

@@ -1,5 +1,17 @@
+// timer for tests specific to testrpc
 module.exports = s => {
-  return new Promise(resolve => {
-    setTimeout(() => resolve(), s * 1000 + 600) // 600ms breathing room for testrpc to sync
-  })
-}
+  console.log('timer to', s);
+  return new Promise((resolve, reject) => {
+    web3.currentProvider.sendAsync({
+      jsonrpc: '2.0', 
+      method: 'evm_increaseTime',
+      params: [s], // 60 seaconds, may need to be hex, I forget
+      id: new Date().getTime() // Id of the request; anything works, really
+    }, function(err) {
+      console.log('resolved to', err);
+      if (err) return reject(err);
+      resolve();
+    });
+    //setTimeout(() => resolve(), s * 1000 + 600) // 600ms breathing room for testrpc to sync
+  });
+};