Add 5 new Python-related docsets.

I made the following changes:
To docsets folder:
e9c18ca Sphinx 1.2.2 Docset first submit.
3663223 bs4 4.0.0 Docset first submit.
22621f9 iPython 2.0.0 Docset first submit.
5821891 Cython 0.20 Docset first submit.
2f49945 Scrapy 0.22 Docset first submit.
To .gitignore file:
cc5e3d9 Add .idea to be ignored.