Update npm packages
ping sinon to 1.9.1
only pin modules that matter
Merge remote-tracking branch 'origin/master' into feature/update-packages

* origin/master:
  switch to YAML syntax for .eslintrc and add documentation
  Clean directory contents without removing the directory
  Correct merge conflict where composite didn't get converted to new gulp format
  Use require-dir to pull in tasks automatically
  remove npm start since it really doesn't do anything, closes #8
  Add license to the project
  Add travis.yml file
  Add a .editorconfig file
  Update index.html to follow html5 Boilerplate

Conflicts:
	package.json
Merge pull request #17 from divmain/feature/update-packages

Update npm packages