small typo in commands_intro, missing "
Yr2009 is not true anymore, change to cfengine class
this is a basic example, it should run without modification
make basic examples in array section self-contained + typo
make bundle edit_line example in Pattern matching and referencing section self-contained
add file content to explain Commenting lines section
Merge pull request #543 from jremond/typo_doc_ref

Typo correction and add elements in reference documentation