Script run_analysis

This script do the following:
1.-Merges the training and the test sets to create one data set.
2.-Extracts only the measurements on the mean and standard deviation
for each measurement.
3.-Uses descriptive activity names to name the activities in the data
set
4.-Appropriately labels the data set with descriptive activity names.
5.-Creates a second, independent tidy data set with the average of each
variable for each activity and each subject.
data and scripts

All data and script run_analysis.R for execute the project
CodeBook.md

Added CodeBook.md and new version of run_analysis