Fix typo in cert file cleanup sub
Don't set env variables before running openssl req

They're no longer necessary since we're generating the openssl
config file on the fly.
Add 'sslmate req' command for generating a key and CSR
Version 0.4.4
Use /usr/bin/env in #! line

In case Perl is installed somewhere besides /usr/bin
Version 0.4.5
Merge tag '0.4.5' into debian

Version 0.4.5

# gpg: Signature made Mon Oct 27 16:30:25 2014 PDT
# gpg:                using RSA key 0x426F7E4DB60BBFB8
# gpg: Good signature from "SSLMate Software Release Role <software@sslmate.com>" [ultimate]
# gpg:                 aka "SSLMate package signing key <packages@sslmate.com>" [ultimate]
Update debian/changelog for 0.4.5-1