Easy-install for the Adafruit Gemma Miniature Wearable Electronic Platform (Arduino compatible)
https://www.adafruit.com/product/1222
./fetch.sh will simply add the attiny header file to the 2 example directories.
./install.sh will put the files in place so you can instantly rock with NeoPixels
If you want to upgrade your arduino IDE (ver. 1.0.1 at the time of this writing) follow those instructions:
https://github.com/SteveClement/fearMe#arduino-upgrade
To get the version currently installed: dpkg -l |grep arduino