Merge pull request #3 from Raynos/github_master

wrap para in maybeCallback so it supports both interfaces
1.1.0
move maybeCallback code into list & hash. It breaks for the arguments case

Conflicts:
	test.js
Merge branch 'master' of github.com:dominictarr/continuable-para

* 'master' of github.com:dominictarr/continuable-para:
  1.1.0
Merge branch 'github_master'

* github_master:
  move maybeCallback code into list & hash. It breaks for the arguments case