Getting and Cleaning Data

This is the Peer Graded Assignment: Getting and Cleaning Data Course Project. The run_analysis.R, will do:

1. Download the dataset into the working directory
2. Load the activity data
3. Load the feature data
4. Load the training data
5. Load the activity
6. Load the subject data for each dataset, and will merge those columns with the dataset
7. Merges the datasets
8. Converts the "activity" and "subject" columns into factors
9. Creates a tidy dataset that consists of the average (mean) value of each variable for each subject and activity pair.

The end result is shown in the file tidy_data.txt.