docs/report: starting with the budget thingie.

I've started by directly porting what I had from the GEP course. I've also
added the "Environmental impact" subsection.
docs/report: a second iteration on the structure of the report.
docs/report: changed the documentclass from article to report.
docs/lecture: starting the slides for the lecture.
docs/lecture: don't ignore the generated pdf file.
docs: re-licensed .tex files from MIT to GPLv3.
docs/gep: this README file is useless.
docs: typo.
docs/report: fixed a couple of issues regarding the layout.
docs/report: written the preface.
docs/report: more on the structure of the report.
docs/report: polished and committed some changes.
docs/report: completed the development module.
docs/report: more polishing.
docs/report: finished the overview section.
docs/report: on the style of chapter titles.
snacker: added some more files that were missing.
docs/report: on the implementation section.
snacker-benchmark: added a benchmark.
docs/report: in the implementation.