PromptsExits.md: fixed the emacs exit command.
Added a slightly modified version of the Oxford-dtc bootcamp testing files. Need to modify a fair bit.
Removed the dna content and added some content on using the python unittest module.
Writing.md: added a final, slightly rambly, example.
Writing.md: fixed the output line number, forgot you start counting from zero - doh!
Writing.md: added a bit more provenance.
Merge pull request #6 from marioa/students

Students