Merge pull request #32 from mkhan100/master

Finished tutorial3
finished tutorial4
Tutorial 4
Merge pull request #33 from domagalski/master

Tutorial 4
finished tutorial4

sorry if I’m submitting this incorrectly
Tutorial 5
Merge remote-tracking branch 'upstream/master'
Merge pull request #35 from domagalski/master

Tutorial 5
finished-ish tutorial 4

fixed error
Finished tutorial4