0.11.1

Changelog

• Improving README (#189)
• Adding example for self-provisioning (#187)
• Removing stdin/stdout topic strings since we currently don't need those topics anymore (#190)
• Use flash strings (F("my flash str") to conserve RAM space (#191)
• Add hiddden property OTA_CAP for signaling OTA update capability (#192)
• Adding FAQ section describing possible causes when the device can not subscribe to the thing id (#194)
• Bugfix: Only set OTA_CAP when correct nina firmware version is installed and inprove warning message (#196)