Update README

I tried to add some clarification on how to install the package, I hope it is correct. This is the information I as a python layman was missing when I first came upon this package.

Typo is corrected now.
Merge pull request #16 from KonstantinSchubert/master

Update README to give more information.
Made the layout a little less messy.
Update README
Merge pull request #18 from KonstantinSchubert/master

I hope it is fine now? Couldn't find the typo you mentioned.
Allow the HTTP timeout to be specified by the user
Merge pull request #19 from devurandom/feature/custom-timeout

Allow the HTTP timeout to be specified by the user