Arnaud gueras

@stubbornella Now the vendor-prefix are now manage, the regexp for cleaning is generic, and take car of some vendor prefix that doesn't begin with "-". This list of vendor prefix...

@stubbornella I have prepared the documentation on my computer and commited in but not pushed. Because I think it's not usefull to document something that doesn't exists in the code....

Bug When I refactored the Javascript for the watch command. It's fixed now