Breadcrumb Rich Snippets Microdata

Using Google rich snippets tools
(http://www.google.com/webmasters/tools/richsnippets) and I found out
that the microdata format is not completely correct.

I think the changes I made fixed that issue.
Update breadcrumb.php

Added a newline
Update breadcrumb.php

Readability improvement
Update the concatenation style

Change the concatenation style as proposed by @zcwilt, @drbyte and @texdc.
Merge pull request #134 from IronLady/upstream

Breadcrumb Rich Snippets Microdata
Request Class #65

See also Pull requests #119

I've made the request class a first class object rather than use the static/facade interface used previously
That only really made sense if we had some DI container to manage it. Although given the use of some 'global' classes
in the code, the use of a DI container is looking more necessary. Something for the future.
I've also added codeception to composer and committed some basic start up stuff for that.
I think codeception looks better in terms of writing acceptance tests, over a selenium/sourcelabs framework.