Added proxy target
Added mg_wakeup_server_ex() for pushing data
Removed extra line in the comment
Added mg_wakeup_server_ex(), removed mg_wakeup_server() and mg_iterate_over_connections()
Added proxy to the clean target
Added pem files
Added proxy example, with SSE html page
Synced net skeleton
Re-added ssl_ca_certificate option
Enabled SSL for proxy example
Made setopt() wrapper around mg_set_option()
Moved sse.html to proxy_web_root/index.html
Merge branch 'master' of https://github.com/cesanta/mongoose