Generator meanjs uses 'console.log()' directly

[anstarovoyt]

Hi. According to the documentation http://yeoman.io/authoring/user-interactions.html :

For example, it is important to never use console.log() or process.stdout.write() to output content. Using them would hide the output from users not using a terminal. Instead, always rely on the UI generic generator.log() method, where generator is the context of your current generator.

Meanjs generator uses 'console.log' directly in 'app/log.js' and as result external tools cannot properly run it.

[ilanbiala]

@anstarovoyt want to submit a PR?