reorder xml, add fields to get 200 instead of 422

from the api calls to airbrake
add flask usage to README.md
make the airbrakesender process a daemon so it exits properly
remove joinablequeue
Using requests instead of urllib2
typo removed
Using requests exceptions
no need of using exception handler in case of timeout
Merge remote branch 'ewheeler/nimrod'

Conflicts:
	README.md
Merge remote-tracking branch 'ralfonso/master'
Merge remote-tracking branch 'aashish-pathak/master'