Fixing #44.
Minor fixes for 5.1.3.4 Compound requirements.
Make example in 7.1.6.4 more meaningful.
Merge pull request #48 from mpark/fix-typos

Fixing #44.
Merge pull request #49 from mpark/compound-requirements

Minor fixes for 5.1.3.4 Compound requirements.
Merge pull request #50 from mpark/meaningful-example

Make example in 7.1.6.4 more meaningful.
Integrate comments from Jens.
Editing.