Update to the yeoman-generator 0.16 extend inheritance method

Use Mocha spec reporter and repository short form in package.json
Update assert function
Merge pull request #17 from corburn/cleanup

Update to the yeoman-generator 0.16 extend inheritance method
Use SVG badge for Travis
Merge pull request #18 from zenorocha/patch-1

Use SVG badge for Travis
Remove Grunt badge in order to standardize READMEs
Merge pull request #19 from zenorocha/patch-2

Remove Grunt badge in order to standardize READMEs