Most of the files are empty and need to be copied or rewritten from the
old docs. Font patching docs have been removed entirely and will be
moved to the powerline-fontpatcher repo.
Ref #769
The installation docs have been split into separate guides for OS X and
Linux, with OS-specific troubleshooting as part of the installation
guide.
Terminal emulator support tables have been added to both guides.
Closes#121.
The header levels have been switched to correspond more with the Sphinx
suggested standards and the troubleshooting section has been
restructured to make it easier to find solutions. Minor markup changes
and other changes are also included in this commit.