moved current doc/ in to doc/datasheet
Merge branch 'master' into 490B
added project concept document
Added requirements document.
added power up off design constraint
lots of work on the design document

Lots of work has been done on the design
document.  It was converted over for the
SprinklerPI project from an old fuel injection
project.  It is not complete and still
needs some work.
more general work on the design document
design document is complete for now

The design document is complete for the time being.
It will be refined more as the project progresses.
renamed main.tex to design.tex, concept.tex, etc
added project schedule