Revert "final changes in files; calculation of averages implemented"

This reverts commit 1b66294a4c888fb998577751be107cb3fa3edf46.
Revert "Revert "final changes in files; calculation of averages implemented""

This reverts commit 57617bb2c7d3c242044dee08f56e3aa2cfcbe4de.
Improving text output of the run_analysis.R script

Improving text output of the run_analysis.R script