Added git tutorials

[JameelB]

Description

Generated website with git tutorials

Additional Notes

Related PRs included in this change:

• https://github.com/feedhenry/student-help-guide-content/pull/10
• https://github.com/feedhenry/student-help-guide-content/pull/8
• https://github.com/feedhenry/student-help-guide-content/pull/7
• https://github.com/feedhenry/student-help-guide-content/pull/6