Merge pull request #126 from timburke/feature-buildfix

Unit Testing Support for pic24
Remove unused modules flow_modules and pv_module, remove the last remaining rake relics.
Add an initial set of documentation pages in the doc folder.  These can be served (as processed markdown) from the gh-pages site."
Merge pull request #128 from amcgee/remove-legacy-code

Remove old module code and rake remnants.
Merge pull request #129 from amcgee/documentation

Add initial documentation collection.
Link to documentation in the README
Merge branch 'dev' of github.com:WellDone/MoMo-Firmware into feature-checksumfirmware