Non grunt users might not figure out that 'grunt build' should be run
inside project folder. This commit improve SASS doc by adding an
explicit 'cd' command before build.
foundation new project_name --libsass
```
-Boom, your project is created! Now you need to use Grunt to compile everything before you start working. Run this command
+Boom, your project is created! Now you need to use Grunt to compile everything before you start working:
```bash
+cd project_name
grunt build
```