A issue in Project Setup chapter

[zouzg]

Good ebook, and I found a little issue maybe it is cause by lodash version ugrade, the issue locate at Chapter Project Step ->Define The Default Grunt Task, page xv, in the Gruntfile.js code snippet, the 'node_modules/lodash/index.js' should be update to 'node_modules/lodash/lodash.js'.
The reason I think maybe cause lodash version upgrade and it doesn't work now, it cost me some time to fix it and I think others may encounter this issue too.