quickstart.md is outdated

[rillig]

The main README.md references quickstart.md, which in turn references a nonexistent directory “deps”.

These two files also mention CentOS 7 as a supported environment, which at least for me doesn’t work anymore since the system-provided OpenSSL doesn’t have the X509_check_host function.

[LBiv]

We migrated it to arch which has access to a newer openssl library. You're right the readme files are out of date.

[flounders]

I submitted a pull request (#34) a while back that adresses some of this.