npm-run-all improvements

Using npm-run-all, you can take advantage of it's shortcuts to have cleaner way not only to define tasks, but to generalize them as well.

Thanks to @ChantOfAnAnt for the contribution.

Use svg-sprite-generator instead of svg-shelf

The API for svg-sprite-generator is more in line with the rest of the project and makes more sense.

Add clean, update uglifer, remove /dist/ from repo

1.0.1

Add clean script. Update uglify script. Add /dist/ to .gitignore

Inital Release

1.0.0

Remove concat task by letting uglify do it