Update README.md

added link to youtube for tcpdump-to-gource
Update README.md

replaced pasted text with wikipedia link and elaborated more on our type of game.
added formating for section heads
Update README.md
Update README.md
Update README.md
Update README.md

embned youtube video
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another try to embed video
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removed test links, because the merge request was made with master.
Minor changes in paragraph titles
Merge pull request #4 from mbenardis/master

Minor changes in paragraph titles