Added outline for people page

The people page includes information about members, instructors, and
officers. Right now this is a barebones minimal skeleton to be added
upon.
Added mock officers in HTML

There's no style at this point other than the default that bootstrap
provides.  However, it has classes that can allow it to be styled.
Each officer sits within an "officer" div, allowing for lots of
flexibility for styling whatever is inside.
Put officers in grid layout

Used bootstraps grid functionality to layout the images and text on
the page.  It takes advantage of the space available on desktops, and
scales down perfectly on mobile.  No changes have been made to the
CSS.  It's still very bare bones.  Also, added an extra officer that I
initially forgot.
Centered names and titles of officers
Added mock instructors

The instructors are very similar to the officers structurally.  In the
original website they didn't seem to have any information about the
instructors, so I only provided names, but a title could easily be
inserted beneath just as with the officers.  Also added centering for
the names, just as I did with the officers.
Merge branch 'master' of https://github.com/robbybro/swing-kids

Incorporating content for people that I've made so far.