update testem version to fix  assertions
Sort dependencies using npm install --save
Merge pull request #717 from xtian/sort-deps

Sort dependencies using npm install --save
Merge pull request #714 from joesteele/update-testem

Update testem version to fix  assertions
Update CHANGELOG for #714.
bump v0.0.28 :tada:
Update CHANGELOG.md
Make server in blueprint optional.