removed non ASCII characters

/var/www/reqorder2.com/shared/bundle/ruby/1.9.1/bundler/gems/crispy-grid-17e6d7847748/crispy-grid.gemspec:8: invalid multibyte char (US-ASCII) /var/www/reqorder2.com/shared/bundle/ruby/1.9.1/bundler/gems/crispy-grid-17e6d7847748/crispy-grid.gemspec:8: invalid multibyte char (US-ASCII) /var/www/reqorder2.com/shared/bundle/ruby/1.9.1/bundler/gems/crispy-grid-17e6d7847748/crispy-grid.gemspec:8: syntax error, unexpected $end, expecting ']' s.authors = ["Christian Peters", "Bernd Nähler"] ^

Signed-off-by: Bernd <bn@reqorder.com>