http://stevenhickson.blogspot.com/2014/08/voicecommand-image-file-and-controlling.html

Here is the link to download a Raspberry Pi A/B/B+ image file that has voicecommand installed already. It also has wiringPi and pilight installed to help you control your electronics.

You can find instructions for how to put this on your SD card here:

http://elinux.org/RPi_Easy_SD_Card_Setup