Added local .gitignore for get-clean-data-proj

- Added a local .gitignore file for the Getting and Cleaning Data
  course project
- Added zip files to the ignore list
Updated get-clean-data-proj .gitignore

- Added the expanded data directory to the ignore list
Updated get-clean-data-proj README

- Added project description
- Added main project script file description
- Added a list of directories
- Added run_analysis.R to the list of files
Added run_analysis.R to get-clean-data-proj

- Initial commit of run_analysis.R
- Currently the script downloads and extracts the project
  dataset
Updated get-clean-data-proj README

- Added a desciption for the list of project files
- Added some file links