First, install dependencies. This is how to do it on clean Ubuntu Precise:
sudo apt-get update
sudo apt-get install git python-dev libxml2-dev libxslt1-dev
git clone git@github.com:svetlyak40wt/amazon-scraper.git
# if it says: Permission denied (publickey)
# then you need to generate a private/public ssh keys and
# put public key to GitHub: https://github.com/settings/ssh
# skip this step if git was able to clone repository
ssh-keygen
# answer default to all questions
cat ~/.ssh/id_rsa.pub
cd amazon-scraper
Next, create a virtual environment:
python virtualenv.py env
env/bin/pip install -r requrements.txt
# generate a proxies list
python env/src/scrapy-proxynova/scrapy_proxynova/proxies.py ru 1 20 proxies.txt
# run scraper
env/bin/scrapy crawl amazon -o data.json -t json