Pointing to the correct file and adding the image, refs #76.
adding volunteers to chapter pages
Adding @brendajin and @minamarkham to contributors list.
Merge pull request #77 from girldevelopit/76-add-favicon

Pointing to the correct file and adding the image, refs #76.
Add rmagick gem to use imagemagick on heroku
Merge pull request #85 from girldevelopit/78-image-resizing

Add rmagick gem to use imagemagick on heroku
Merge pull request #80 from minamarkham/volunteers

adding volunteers to chapter pages