Add course directory manifest and upload notes

.gitattributes

@@ -1,7 +1,3 @@
-
-# Upload-only course archive
-* filter=lfs diff=lfs merge=lfs -text
-.gitattributes -filter -diff -merge text
-README.md -filter -diff -merge text
-_course_archive/Environment-and-Atmosphere-53/directory-structure.json -filter -diff -merge text
-_course_archive/Environment-and-Atmosphere-53/README.md -filter -diff -merge text
+version https://git-lfs.github.com/spec/v1
+oid sha256:ed0926685ac13cfbf62bc240e5adcff343b217217bc40116713b16d7ee1eb99b
+size 331

README.md

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:899189aa2e6370714dde131f935a7fd764719a3afd45e8283dee406d76bb174e
+size 432

_course_archive/Environment-and-Atmosphere-53/directory-structure.json

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:30bc71501fe88190ad3359492ef0d82be973b81543ca00a3803d8279c3630117
+size 756