Merge pull request #62 from dmichiels/master

add stack card and some refactoring
added shell script
Update README.md
Merge pull request #67 from sjmackenzie/master

added shell script
Update README.md
added thesis
Merge pull request #68 from sjmackenzie/master

added thesis
Update README.md
tests dir
tests in README
resolve conflict
Merge pull request #70 from sjmackenzie/master

cleaned up tests
Update README.md
Update README.md

These links do not work :-)
Merge pull request #71 from rhalff/patch-1

Update README.md