This conflicts with my other PR https://github.com/bitpay/bitcore/pull/150 where I change these lines:

```
-  var preludePath  = 'node_modules/soop/example/custom_prelude.js';
+  var file = require.resolve('soop');
+  var dir = file.substr(0, file.length - String('soop.js').length);
+  var preludePath = dir + 'example/custom_prelude.js';
```