Arduino released version 1.6.3 which moved the compiler tools back to the application folder. Version 0.3 of IDE4Arduino is now compatible to this Version (so 1.6.0 to 1.6.3 without v1.6.2, which was maybe released on error ?!?).
Also small bug fixed in the main code.
<-- Download Link for pre-build installer and code on GitHub on the left