Add the Git tutorial Event.

[TheFlash98]

The recently held Git events is missing from the events sections. We should add it, with link of the wiki page and some photographs. Should be fairly simple using the template of the other events and filling in proper content

[krishnaw14]

@TheFlash98 Which photographs are you referring? I couldnt find the photographs of the Git event in the images or event_images ?

[TheFlash98]

I'll add them there soon, you get started with the other stuff till then.

[starlord1311]

are the images added?

[nihal111]

@starlord1311 I just added the Git tutorial images below.
GitTutorial.zip

[thenotsodarkknight]

@TheFlash98 This is done.