Prevent going to the root when setting up the initial hashchange route

[matthewp]

Fixes #242

[coveralls]

Coverage decreased (-0.4%) to 90.588% when pulling cf36f16 on root-hash into 0ad0b2b on master.

[tleunen]

@matthewp For some reasons, this change is breaking for me when having page.setup({ hashbang: true }) and using a local file (file://something/index.html) like in an electron environment.

This causes an infinite reload page since this line is always false (https://github.com/visionmedia/page.js/blob/master/page.js#L790). The reason is because getBase() uses loc.pathname, which is the location of the file (file://...), but ctx.canonicalPath is an empty string "" instead of being also loc.pathname.

[PaulMaly]

@tleunen Is it fixed?

[tleunen]

No idea. I have stopped using it. And I don't work in the codebase which were using it.