Fix path to fonts for dist and deploy tasks

It’s just one level up for the generated css, because the css doesn’t live within the `source` sub directory :kissing_heart:
Merge pull request #60 from mischah/fix-path-to-webfonts

Fix path to fonts for dist and deploy tasks
Update dev deps and engine

- Move to caret ^ deps (npm update)
- Go with 0.10.x
Use yeoman-generator v0.18.0

* Update to use new fs API
* Had to change templates that generate templates as there is a
regression bug in yeoman-generator
(https://github.com/yeoman/generator/issues/700)