Merge pull request #33 from Crystalnix/FixABugsMaster

Fix a bugs master
Created a parser for ozon.ru
Fixed some issues.
Added new header in parsers.py
Fixed a issues
Updated requirements.txt
Created an unit tests for AmazonParser and OzonParser.
Corected an unit tests.
Corrected an unit tests.
Merge pull request #34 from Crystalnix/RequestBookContent

Automatic upload of content from  site amazon
Corrected an merge conflicts.