Start of Git session 1: intro and single-user mode
Major update, new sections
cd to top folder before using git submodule
Finished tutorial 1
Added session 1 images
Add copy of PDF file for session 1
.gitignore in lesson 1
Typo in lesson 1
Add tufte template in a common folder, will delete submodule later
Added folder and skeleton for SVN --> Git Migration handout