Merge pull request #32 from kgrz/master

Remove the nomargin class (Merge pull request #32 from kgrz/master)
Sponsor logo grid
Add sponsors

Doing away with the gridism framework as we won't need much of it.

Instructions to add a new sponsor:

To add a new sponsor, just add an anchor tag similar to one of the
existing ones inside a list tag. apply a class of .imagereplace for
the anchor tags. Add an id to the anchor tag and in the css, give the
id a background of the company logo and specify the width. No need to
specify a height. All the images should be resized to fit a height of
60px.
1. Sponsors section has equal weight as speakers.
2. "Current" in "Current Sponsors" is inappropriate.
Adding sponsor blog for codebrahma
Merge pull request #37 from char-star/master

Adding sponsor blog for codebrahma
Using the standard color for sponsors heading
Merge pull request #39 from char-star/sponsor_section_title_and_header_changes

Using the standard color for sponsors heading
Merge pull request #35 from GardenCityRuby/sponsor_section_title_and_header_changes

Proposal: Sponsors section could do with a few changes
Added associate plus spot.
Adding goodworklabs and paramisoft logos
Update Jekyll installation on the server

Update v 1.0.3 to v 1.2.1 Fixes #38