Fixed some grammar and spelling in the README
Merge pull request #56 from rgbkrk/patch-1

Fixed some grammar and spelling in the README
add nbcv2submodule
update sm
new nbviewer from jinja branch
update submodule
improve toolbar css
enable GA, comment unused JS
fix download notebook
small easter eggs/nbviewer themes

By tempering with the cookie, you can force a theme to be
applied to a notebook  :-)
use tornado as WSGI, and improve cache
use sasl memcached with falsk-cache
del cachedfirst param
def min/hours un cachedget
caches only inner body
caches errors and popular
remove /popular url and stats

with recent improvement, db is the bottleneck
pylinting
fix css output pre
renable theme selection