Adding hasLengthGreaterThan docs
Merge pull request #24 from ericduran/greaterThan

Adding hasLengthGreaterThan docs
fix code tags (thanks to Nasga)
rename fr/chapter* to fr/chapitre*
fix travis configuration
add new citations
add string()->length, array()->size and exception()->message french documentation
Add notifiers code snippets (fr/en)
Typo
Move notifications doc.
Add some text (fr/en)
How to check for required utilities (fr/en)