Merge pull request #2 from palli/master

Patched check_ocsp_hard to suit my needs, feel free to pull the changes
Updated check_ocsp readme and regular readme
Updated check_crl readme
Add DNS zone sync check
check_ocsp made more dynamic

* Better suited for general purpose use now
* prints help dialog on invalid usage
* All variables like certificate file and issuer can now be set from the command line
chech_ocsp_hard.sh renamed to check_ocsp_hard.sh

I believe "chech" is a typo