Release 2.2

Features:

• Letsencrypt autorenewal implemented. Realized with side-containers for certificate renewal and configuration reloading. Now works fully automatically each month!

Fixes:

• Fixed directory of Pid file. Pid file is now written and demon command like nginx -s reload work.

Tickets:

• #1
• #6
• #4
• #5
• #8
• #7
• #9
• #17