what are the steps to install prediction IO on windows 7 : <p>i am new to predictionio and i am not able to install the predictionio on my PC. The steps given on the apache site i am not able to understand command like 
$ tar zxvf apache-predictionio-0.12.1.tar.gz
$ gpg --verify apache-predictionio-0.12.1.tar.gz.asc apache-predictionio-0.12.1.tar.gz
.
.
.
which are given on site document
 can  you please provide step by step installation for windows.</p>
