Update composer.json

Removed name 'silverstipe'
Marked public statics as private; Added 'public' to functions where missing for consistency
Created new _config directory and moved config options to .yml file
Changed <% control %> to <% loop %> in templates to get rid of deprecation errors
Fixing Breadcrumbs on the DataObject Page. Currently the breadcrumbs only work when the Holder page is the root page. If it is any deeper the middle pages will be in the incorrect order. This code fixes that problem.
Merge pull request #32 from Bob-Plastyk/master

Breadcrumb fix
Merge branches 'master' and 'patchTo3.1' into patchTo3.1
bugfix in 3.1 branch
Merge pull request #31 from p7media/patchTo3.1

Patch for 3.1 releases
Update README.md