Merge pull request #9 from aig787/master

Upstream merge and getting started changes
Change link to slides.
Merge pull request #12 from reillysiemens/master

Change link to slides.
Improve Markdown formatting and correct minor errors in README.md.
Change cloning repo, continue to make minor improvements in README.md.
Use backtick code blocks instead of indented ones.
Merge pull request #13 from reillysiemens/fix-readme

Clean up README.
Added section about postgres installation and config