chore(grunt): adds load-grunt-tasks module

So you don't have to maintain your grunt tasks manually anymore :)
chore(editorconfig): adds .editorconfig file

makes it easier for contributors to not mess up the coding
conventions. :)

See http://editorconfig.org/
chore(grunt): adds conventional-changelog task

this is for generating changelogs based on the commit
messages you're already using in the project.

See http://github.com/btford/grunt-conventional-changelog
chore: fix conflict