Lots of assorted changes, rakefile forces overwrites (fixes nohup error)
some extra inages, some extra text in timer chapter
Some assition to the timers chapter, and added the base content files
for all the other core chapters.
Lots of changes, preliminary work on ADC, and a skeleton for the DAC
chapter, etc.
Huge additions to the ADC chapter
Lots of additions for the DMA chapter
Merge branch 'master' of https://github.com/seankross/UMD-CMSC498a-Intro-to-ESD