To edit sketches one needs to specify extra include paths from Arduino Ide installation (e.g. %arduinoidepath%/Resources/Java/hardware/arduino/cores/arduino , %arduinoidepath%/Resources/Java/libraries/SoftwareSerial) and add "ino" extension mapped to c/c++ file type. Another needed configuration setting for resolving Arduino built-in symbols (like Serial) is specifying custom file in Additionally automatically included header file of C/C++ project settings. The file (e.g. ArduinoSetup.h) should have following content for auto adding Arduino specific symbols declarations in every file:
#include "Platform.h" // Arduino symbols declarations
Once one finishes with sketch editing one can use Arduino IDE to upload the sketch to the device.