Break out EVTPE cleantypes() function.

Break out cleantypes() function since was making editor scrolling very
jerky and slow.
Initial Code Book start
Average Value summary output file.
Create function to expand variable names

Function to create more human readable names.
Update summary
Code Book for Fit data processing
Output from run_analysis.R script
Data used by run_analysis.R script

UCI HAR data for Samsung S II fitness experiments.