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/Computational-Methods-60/directory-structure.json -filter -diff -merge text
-_course_archive/Computational-Methods-60/README.md -filter -diff -merge text
+version https://git-lfs.github.com/spec/v1
+oid sha256:3eb4d3f483b537ddb08bfde2058142df955455013763f2b7d61a6ece9ddf7219
+size 321

README.md

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:7048b5aada5948415b8ec6d84c95441e7259a7f0658869c6eb2ee59bfc4be8af
+size 426

_course_archive/Computational-Methods-60/directory-structure.json

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d2f54900b8553bff1e62fe2ffba8bbe16f7e67f1d6725823c16e34b5d3dca1d4
+size 18107