Add `SYSTEM_EVENT_WIFI_READY` call back + WiFiMode fixes#1322

Merged

me-no-dev merged 3 commits intoespressif:masterfrom

sticilface:WiFi_fixes

May 23, 2018

Commits on Apr 16, 2018

Add `SYSTEM_EVENT_WIFI_READY` call back once wifi service is init. allows you to hook in, as the sdk does not generate this event for you.
sticilface
committed

Commits on May 22, 2018