Added the files along with series meta
Added missing sentence.
Added the guidelines page
Fixed typo
Added edit on github guide.
Added the previewing guide.
Updated the "advanced" guide.
Merge branch 'master' into bug-seriesspace
Merge branch 'master' into bug-seriesspace
Merge branch 'guide-contributeupdate'
Merge branch 'master' into bug-seriesspace
Fixed added space in series titles

This bug had nothing to do with Series, though that's where it was
primarily visible. Simply put, ripping the title from the markdown DOM
was causing excess spacing.

In places where this was used directly into
HTML *(such as in a template)*, it was fine and unnoticed. HTML simply
trimmed the excess whitespace.

In places where the text was combined, such as in series titles, the
whitespace became visible and ugly. This is of course, resolved.