Edited the titles of the examples to be more concise.
Refactor step 2 so that an empty @vocab resets the default vocabulary
Merge pull request #103 from scor/master

Refactor step 2 so that an empty @vocab resets the default vocabulary
Merge branch 'master' of github.com:njh/easyrdf
Code style fixes for #103 - line was too long
Removed references to index.html from Makefile
Added class path optimisation for composer autoloader.