fix date ranges
add commas in large numbers
prefix positive percentages with a +
apply colors and spacing using premailer
right-align text in table
remove borders between percentages and values
increase font size of percentages
move date range cell creation into helper
shrink the date range font size
re-add commas to old values
add base font-size
Merge pull request #18 from afeld/date-range-fix

@fancyremarker => fix date ranges
Merge pull request #19 from afeld/formatting

@dylanfareed => email styling
Merge remote-tracking branch 'upstream/master' into ruby-1.9.3
fix require path for email_helper