add timeout parameter

set this if a check takes longer than 10 seconds (=default)
remove epilogin help, since it's not true for all checks
add cacert parameter to README
add check_ceilometer-statistics

Nagios/Icinga plugin to check ceilometer statistics. Returns the statistic of
the chosen meter. This also returns the age of the last sample used to
aggregate. So this check can also be used to verify freshness of samples in
the ceilometer DB. (or of course to check the value).
add check_keystone-token

Nagios/Icinga plugin to check keystone. The check will get and delete a token.
increment version to 1.0.1
Fix filename parameter
new version 1.0.2