This commit involves a modification, add, delete, and modify.
Updating the README.
Updating file6 with the appropriate header.
Adding a new function to hello.py.
Adding some content to file5.md.
Merge branch 'master' into extras
Adding some comments to the hello.py script.
Adding a new extras markdown file - file4.md.
Adding some content to file6.
Merge branch 'extras'