Update README.md

Added youtube video link
Cleaned up variables and functions
Update gitignore
Test update

put a couple props in the mountains, not particularly important just
testing.
Merge branch 'master' into iss65
Merge pull request #25 from InebriatedSquirrel/test-(Frankie)

Test update
Map changes
Level merge
Fixed level spawning
Mission 3 Basics Laid Out

Placed down two semi-transparent doors between the beach and the city
locations. Placed a giant ice cream at the height I’m expecting us to
fly at.
Level 3-started

Started level 3 area, started populated area
left half of the city layout
right half of city map
Merge pull request #28 from InebriatedSquirrel/test_Bryce

left half of the city layout
Merge pull request #29 from InebriatedSquirrel/test_Sam

right half of city map
Merge pull request #26 from InebriatedSquirrel/Ftest

Mission 3 Basics Laid Out
Merge pull request #27 from InebriatedSquirrel/Test-R2

Level 3-started
Merge branch 'master' into test_Bryce
Merge branch 'master' into test_Sam
Merge branch 'master' into test_Bryce