Updating README

Adding less compiler instructions
Updated vendors (2.3.0-rc1 404 errors due to 2.3.0 final?)
Silenced missing file warning by pointing to a jquery cdn version.
Made the status change alter the correct table cell
Fixes #1 and #2
Minor style change to prevent table cell height changes
Implemented totals

Counts lunch attachments up until the current day, does not include future assignments.
Removing TODO
Merge pull request #3 from thanosp/ff-bugfix-and-update

Bugfix and vendor update
Merge pull request #4 from WEBclusive/implement-totals

Implement totals
Including today in total.
Merge pull request #5 from WEBclusive/implement-totals

Including today in total.
Merge branch 'master' into highlight-today

Conflicts:
	src/Webclusive/Bundle/LunchBundle/Resources/public/less/lunch.less
	web/css/site.css
	web/css/site_lunch_1.css