Event data for defaultBehavior

Ensures that the defaultBehavior function receives eventData
Per instance callback removal
Details at https://github.com/flightjs/flight/issues/260#issuecomment-46805080
Fixes #260
Update Karma and RequireJS
Merge pull request #257 from 6twenty/event-data-fix

Event data isn't passed to default event behaviour
Merge pull request #282 from giuseppeg/off-instance-events

Per instance callback removal
mixin docs: defaultAttrs -> attributes
create jscs.json, add checkStyle step to npm test
Merge pull request #291 from flightjs/jscs

Add style checker to `npm test`
Add npm-install task to Makefile
reference karma and jscs tests
'standalone' is overloaded
Merge pull request #292 from flightjs/contrib

Contrib
Fix typo in README
Merge pull request #295 from emret/readme-fix-typo

Fix typo in README