Changes in format

First, I word wrapped the lines, which won’t affect of they are
displayed.  Second, I rewrote some run-on sentences and broke out the
rate changes into a list.  Third, I added markdown for links, terms,
and a bullet list.
Try revving font tools

TravisCI builds are breaking.  I look at PyPi and fontttools2 , v2.3
seems to have become font tools, v2.4.  Trying to update and see if
travis takes it.
Try to fix Polygon2 dependency

Travis CI builds are still failing, now on Polygon2.  This package is
not available PyPI and needs to be explicitly downloaded.
Change polygon2 agin, remove --use-mirrors

Download of polygon2 now works, but pip was looking for file in root.
Also, —use-mirrors has been deprecated.
Minor echo..

Having to debug travis in source control for now.
Touch
Touch and try again
More playing
More testing...

OK, build now installs Polygons, but breaks on setup.py and on unit
tests.   This test should fix setup.py in 2.6, and gather information
for the unit test failures.
Try adding site-packages to python path.
More tests...

The 2.6 version is kind of borked, now with no check_output (which came
in 2.7).   The 2.7 is failing to find video, which might be somewhere.
More testing...

Python Version 2.6 probably won’t work as polygon is no longer
supported for it.   Now fixing the unitttests.  It is unclear if
‘import vide’ is now wrong in api or wrong in the installation.
Hacky test...

So, everything on 2.7 works except the unit test return code is still
wrong.  Let’s hack it first and see if that’s the last bug.
Remove 2.6
Check unit test exit code explicitly.
One more change to build.

Typos.
Create DEVELOP.md with glossary.

A useful piece of documentation for any developer.
Fixes to Glossary
DEVELOP.md:  more glossary, start orientation section.
Merge pull request #52 from merriam/master

Make changes, fix Travis CI build.