style (Gruntfile.js) Remove extra comma in Gruntfile

Remove extra comma from Gruntfile. Not needed for nodejs to run it but
jshint warns about it when running "grunt"
Merge pull request #241 from eddiemonge/gruntfile

style (Gruntfile.js) Remove extra comma in Gruntfile
build(app): use new prompts
fix(build): Bumped yeoman-generator version for new prompt
fix(test): Updated tests for new prompt

Close #238
fix(app): components to bower_components
fix(build): don't override generated css files

Fixed #231
CSS was previously generated through compass and moved into a `main.css` file,
but later overwritten by `concat` task generated by `usemin`. This removes the
usemin block around the CSS link and adopts the same schema used in
`generator-webapp`.
fix(build): use Usemin for all CSS.
Merge pull request #248 from passy/css-fix

fix(build): don't override generated css files
fix(build): dropped nospawn option from watch

Fixes potential blank page issues (#247)
fix(build): add svg files to the copy task
Merge branch 'vladikoff-patch-1'

Close #253
chore(deps): add NPM >= 1.2.1 as engine requirement.
Merge pull request #255 from stephenplusplus/master

Add NPM >=1.2.10 as engine requirement