Add some pictures

README.md

@@ -2,10 +2,22 @@
 
 This program will notify you when someone opens your outdoor mailbox. Program features:
 
-* Support for multiple mailboxes
 * Notifications via LED, internal web site, Telegram or Google Assistant
+* Support for multiple mailboxes
 * Log of events
 
-Hardware part is maid with a pair of ESP-01, which rely on HC-12 radio modules for communication using hand-made antennas. Classical reed sensor is used for door opening detection. Radio link works reliably at 150 m distance with some light obstacles (trees). Remote (mailbox) module is powered with one 14250 battery lasting for 8 months. The schematics are simple, especially for the receiver part. 
+Hardware part is maid with a pair of ESP-01, which rely on HC-12 radio modules for communication using hand-made antennas. Classical reed sensor is used for door opening detection. Radio link works reliably at 150 m distance with some light obstacles (trees). Remote (mailbox) module is powered with one 14250 battery lasting for 8 months. The schematics are simple, especially for the receiver part.
+
+Receiver (left) and transmitter (right) before installation:
+
+![modules](doc/images/modules.jpg)
+
+Web interface:
+
+![web interface](doc/images/web.jpg)
+
+Telegram interface:
+
+![Telegram interface](doc/images/telegram.jpg)
 
-Dependencies are listed in [mailbox.ino](mailbox/mailbox.ino) file. Documentation and schematics will be added soon.
+Project dependencies are listed in [mailbox.ino](mailbox/mailbox.ino) file. Documentation and schematics will be [added soon](https://github.com/denis-stepanov/esp8266-mailbox/wiki).