Minor updates to README (released version of em-proxy specified in .gemspec is adequate)
fix typo in directory name
add alternative backend for unicorn
document new unicorn backend in README
add spec for unicorn arguments
Fix ruby 1.8.7 support by borrowing from ruby 1.9's Dir::Tmpname.make_tmpname
Merge branch 'master' into unicorn
fix specs that were expecting 'expects'
update CHANGELOG with new unicorn back-end
Updated changelog, version, README.