Use rawgithub.com for script includes

Change `raw.github.com` src to `rawgithub.com` to make “Gentle introduction” examples work right out of the box
Made Router.param() return "this" so that params can be chained.
Merge pull request #232 from cuzzo/feature-chain-parmas

Made Router.param() return "this" so that params can be chained.
Merge pull request #230 from acusti/patch-1

Use rawgithub.com for script includes
Start testing node 0.11
Whitespace cleanup
Reformat markdown for better readability

- rawgithub.com → rawgit.com
- reflow to 80 characters
- remove manually created anchors; GitHub creates them now
- change <img> tags to markdown tags
Remove shims for obsolete browsers, fixes #98

Users wishing to support older browsers (like IE 8, for example) will need to
shim `Array.isArray` and `Array.prototype.filter` themselves.
[fix] fix undefined fns.captures in async mode

Fixes #183 and #187.
[fix] add missing path() method to browser build

Fixes #176.
[fix] fix path.resolve crash in html5 test backend

Using fix from #237.

Also tabs → spaces.
[build] version bump, new browser build
[fix] Note that router.attach is http-only

Fixes #214.
Merge pull request #2 from flatiron/master

updating