Update package.json

[raulfortes]

Need to upgrade node-sass to install

Error:
Build failed
npm ERR! Darwin 14.3.0
npm ERR! argv "node" "/usr/local/bin/npm" "install" "dashing-js"
npm ERR! node v0.12.4
npm ERR! npm v2.11.0
npm ERR! code ELIFECYCLE

npm ERR! [email protected] install: node build.js
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the [email protected] install script 'node build.js'.
npm ERR! This is most likely a problem with the node-sass package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR! node build.js
npm ERR! You can get their info via:
npm ERR! npm owner ls node-sass
npm ERR! There is likely additional logging output above.

[kheremos]

@raulfortes Is this repository being kept up-to-date? I really like the work you've done, but another team I recommended this project to replied that they only trust "up-to-date and active repositories"...

Thanks for providing a dashing port to node...

[raulfortes]

@kheremos i don't no if the project is up-to-date. I tried to send the pull request with the update fix, but after 26 days i did not get news.

[kheremos]

Oops! Meant that comment for @fabiocaseri But the autocomplete threw your name in, because this is your PR... Apologies. It's Fabio that I was hoping would do a few updates, to give this project a pulse...