Fixes #14

removed multi-dimensional build_formats property in Breadcrumb construct
in_array was returning false for the acceptable builds because
the array was multi-dimensional

builder construct argument three was set to array, however in
breadcrumb->build() it was instantiating it with a Config object
causing an argument error; removed array type from this argument
Merge pull request #15 from alexnaspo/master

Fixes #14

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