Added a notebook for teaching git.
Materials for testing lesson.
Added reproducible workflow lesson.
Merge pull request #1 from gvwilson/gh-pages

Adding country (so that the right flag will appear)
First commit for the pegasus workflows lesson
updated the username and slug
Merge pull request #2 from vahi/gh-pages

First commit for the pegasus workflows lesson
Installation instructions + some reference material for git.
Merge pull request #5 from arokem/installation_instructions

Installation instructions + some reference material for git.
Trivial change
completed the port of the pegauss tutorial to markdown from the
docbook.
added the DAG image.
Merge pull request #6 from arokem/pegasus

Pegasus completion of the basic pegasus module
Added links to catalogs.
Added introduction to Pegasus at the starting.
Added reference to virtualbox lesson.
Added the virtualbox lesson.
Merge pull request #7 from arokem/pegasus

Added virtualbox lesson and completed the basic Pegasus module
Merge pull request #4 from arokem/testing-materials

Testing materials
Merge pull request #3 from arokem/git-notebook

Added a notebook for teaching git.