Update homepage.html

Added missing opening HTML tag after doctype.
Fixes #473 issue with thumbs up/down receiving up/down arrow formatting
Merge branch 'master' of github.com:Semantic-Org/Semantic-UI
Merge pull request #482 from dos1/master

Fix JSFiddle link in documentation.
Merge pull request #478 from pinodex/patch-1

Update homepage.html
Adds warning color to progress (fixes #444)
Merge branch 'master' of github.com:Semantic-Org/Semantic-UI
Accordion docs had extra closing tag, adds progress docs for warning, updates details of development docs
Fixes #484 typo from regexp replace causing placeholder not to exist for input
Removes vendor prefixes from checkbox source, adds transform: none to avoid GPU acceleration triggers which might cause rendering issues with radio box circles
Added missing opening HTML tag
Merge pull request #485 from MohammadYounes/master

Added missing opening HTML tag
Keeping Modal in place
Fix CONTRIBUTING.md: docpad now on top level
Note that docpad run depends on grunt build
Merge pull request #489 from clkao/doc-contributing

Fix CONTRIBUTING.md: docpad now on top level
s/Everyday/Every day/

Everyday is an adjective, but that's not really what you want here.  :)
Not a big deal, but worth tweaking.  See
http://snarkygrammarguide.blogspot.ca/2010/08/every-day-vs-everyday-learn-difference.html
Merge pull request #496 from oalders/master

s/Everyday/Every day/
Adds more translation details to README
Update README.md