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/Nautical-Instruments-English-48/directory-structure.json -filter -diff -merge text
-_course_archive/Nautical-Instruments-English-48/README.md -filter -diff -merge text
+version https://git-lfs.github.com/spec/v1
+oid sha256:417dfd8cc13d5021b825b3e3379c3a1a96d4bdb124006ea4c9d793b52c5888ab
+size 335

README.md

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:4db80a9cffd9dfbd8ccd1ec128f17d0a4f473765ce24db8b44a38e3e47732f9c
+size 436

_course_archive/Nautical-Instruments-English-48/directory-structure.json

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:a13dba356692850f6977e753451fd68d02deb83a70b7d7beef44f23e93250e4a
+size 5896