Documentation: Add style guidelines from Python and C++
Documentation: Change the order of which the style guidelines are listed

C++ comes first, as it is the primary programming language of this project.
Documentation: Remove unrelated line in C++ style guideline
Merge pull request #11 from loblao/enhancement/style-guide

Enhancement/style guide
Reader: Change case of readme.md (it is now README.md)
Reader: Add convenience functions for components
Merge branch 'master' of https://github.com/loblao/libpandadna into wip/python-signs