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.
Kim Silkebækken