Improving .gitignore and .npmignore gh-8
Adding support for generating coverage maps gh-7
Adding changelog to README
Prefer using locally installed vows package

* grunt-vows will first try to look for a vows executable relative to where
it is installed (<project>/node_modules/) and use that instead of assuming that
that vows is installed globally. If no local vows package is found then the
task will fall back to using the global executable).
Bumping version to close 0.3.0 milestone
Fixing a regression in support for older versions of Node
Merge remote-tracking branch 'origin/master' into grunt-0.4

* origin/master:
  Fixing a regression in support for older versions of Node
  Bumping version to close 0.3.0 milestone
  Prefer using locally installed vows package
  Adding changelog to README
  Adding support for generating coverage maps gh-7
  Improving .gitignore and .npmignore gh-8

Conflicts:
	package.json
Grunt 0.4 compatability

* `this.options()` support
* `this.files` support