Getting and Cleaning Data Course Project

- Add run_analysis.R script to generate independent tidy data set
  (UCI_HAR_Averages.txt) with the average of each variable for each
  activity and each subject

- Add README.md to describe how the eun_analysis.R works

- Add CoeBook.md to describw the origin, layout and content of
  UCI_HAR_Averages.txt

Signed-off-by: Attila Vamos <attila.vamos@gmail.com>