Merge pull request #20 from jsilvestre/master

Minor improvements in cookbooks
[fix] Rename light-update to update
Merge pull request #28 from Kloadut/patch-1

[fix] Rename light-update to update
Add debugging tutorial
Merge pull request #29 from Kloadut/master

Add debugging tutorial
[fix] Links and typo
Merge pull request #30 from Kloadut/master

[fix] Links and typo
Fixed: wrong link in homepage. Close #31