git backup intro lesson now introduces the basic concepts of git structure
Update 01-backup.md
Change to working tree to match gitglossary
Add 05-undo.md as alternate way to explain git reset
Merge pull request #1 from jdcorless/master

Small changes to 01-backup.md and added 05-undo.md as an alternate
simplified discussion of git reset
spelling error
added table and some MD formatting to 01-backup.md, deleted 05-undo.md
Merge pull request #2 from jdcorless/master

added table and some MD formatting to 01-backup.md, deleted 05-undo.md
Update 01-backup.md
automergable version of intro git material
Seeding the intermediate material on Make
Seeding intermediate material on the bash shell
Incorporating suggestions from @r-gaia-cs
Merge branch 'master' into seeding-intermediate-make
Merge pull request #263 from gvwilson/seeding-intermediate-make

Seeding the intermediate material on Make
Merging recent changes from master
Incorporating comments from @r-gaia-cs
Merge pull request #264 from gvwilson/seeding-intermediate-bash

Seeding intermediate material on the bash shell
Merge pull request #264 from gvwilson/seeding-intermediate-bash

Seeding intermediate material on the bash shell