Add an svg_cairo binding, not working for now.
README: Mention dependency on tyxml
README: Caveats for OS X
README: Nicer description of dependencies
README: Typeset file names
README: Use simpler syntax for external links
README: Nicer TODOs
README: Link for 'Batteries Included'
Merge pull request #1 from nbraud/readme

Improve README.md, by nbraud
Abstract over the type of streams.
Pack the engine into a functor parametrized by the type of the stream.
Change in the cli, remove the output option and integrate it to the various backend options, add a gtk option.
Pack the position of the turtle in a float record.
Begining of a combinator interface.
Add the BatSeq stream in the engine, now the default stream (2.5 time faster, with no optimisations).
Add Stream and LazyList, both are terribad, LazyList is *really* bad.
Merge branch 'master' of github.com:Drup/LILiS
A bit of tunning in LsSeq.expand_map.
And a very little bit of documention about this tunning.