updated speaker images.
changed signup links. removed unused images.
added hellobar to pages
updated andreas addison bio
Merge pull request #64 from wbprice/gh-pages

update speaker images, add andreas addison bio info.
remove fork me
updating copy, spellcheck
heading fixes
taking hellobar off front page
update tcc logo w/ approved version
adjusted tcc logo to correct
Merge pull request #66 from stanzheng/gh-pages

adjusted tcc logo to correct
update tcc logo with approved version
correct image
replace tcc.jpg w/ tcc.png and add height constraint to css
merge conflict
Update index.html
brendans changes
upgrade speaker blurbs
change font of intro sentence for each section to body font, reduce size.  reduce size of preamble text.