added plotly thumbnail
Added plotly example
Merge branch 'pr/151' into qa
Add optimized image
autogenerate frontpage
cleanup import
complete faq, make sections on front page
improve FAQ, linx errors pages to FAQ
rackspace in footer
crush all pngs
s/informations/information
Kyle suggestion + plotly
Grammar and spelling fixes.

Also made usage of we and I consistent by just using 'we'.
More little bits of clean up.
Got rid of architecture layout.
new thumbnails

for mining the social web and Jose Unpingco Python for signal
processing.
link IRuby
remove some examples change IPtyhon thumb
add donation link
new thumbnail for prob programming