Developer's Guide in Wiki

[travisgoodspeed]

Close this issue when a page of the wiki explains what to do for a good development environment, both hardware and software.

[travisgoodspeed]

A first draft has been posted to the wiki, https://github.com/travisgoodspeed/goodwatch/wiki/DeveloperGuide

Some remaining items before closing this issue:

• [ ] Photo of JTAG on an assembled watch.
• [x] Explanations of memory usage, other C tips.