Offsets, xclass for span

Added offsets and xclass to span tags
Lead tag and do_shortcode for collapsibles.
Formatting changes and updating the badge to Bootstrap 3
Updating the icon short code to bootstrap 3
Icons are now in font format, removing no longer required white icon
Updating the read me to reflect change in bootstrap version
Scaffolding out the column short code
Updating the buttons documentation and short code
Updating the alert short code and documentation
doc fixes
Updating the code short code and documentation
doc fixes
scoping out the column short code and improving the documentation
Improving the docs with a TOC
fixing readme
fixing the well anchor in the read me
Adding links to the bootstrap docs
Updating the documentation
Label bootstrap 3 code & minor doc changes
bootstrap documentation link