Modified new test to be a less complex (sets content to something shorter than the total widget height), while still testing the new fix
Add support for mapping route params to regexps for processing

It's desirable to both use string-based routes with named params, e.g.,
`"/posts/:id"`, and assign some processing to route param values, e.g.,
`id` should be a number.

This adds a feature to Router to support mapping named params to regular
expressions. See the following example:

    var router = new Y.Router({
        params: {id: /^\d+$/}
    });

    router.route('/posts/:id', function (req) {
        // This route will only be executed when `id` is a number.
        // `req.params.id` is the result object/captures array from
        // `exec()`-ing the regular expression.
        Y.log('Show post: ' req.params.id[0]);
    });

    router.save('/posts/1'); // => "Show post: 1"

    // This won't log anything because `id` is not a number.
    router.save('/posts/asdf');
Add support for also mapping route params to functions for processing

Now both regexps and functions are supported for route param formatting
and validation.
fix Binding context in Y.Node.addMethod #1027
fix Binding context in Y.Node.addMethod #1027 build file
Normalize NPCG in a regex route's matches to empty strings for undefined

Fixes #1076
Update Router's HISTORY for coercing NPCG `undefined`s to empty strings
Invoke param handler functions with the `this` context of the router
Add API docs for Router params
Update Router's user guide with Router Param docs
Add Router HISTORY entry for route param handlers feature
Udate chart's HISTORY to reflect logarithmic scaling.
add unit test
Build Router
Merge branch 'dev-master' into dev-3.x
Merge branch 'router-params' into dev-3.x

Conflicts:
	src/app/HISTORY.md
Build Router
Merge branch 'fix-Node-addMothod' of https://github.com/zhiyelee/yui3 into dev-master
Add additional assertion to check for node context
Build Node