added svg alchemy element to landing page
release button and tooltip for tutorial are styled in
example landing and no.1 and 2 are mostly styled out. 3 and 4 in progress.
committing before pulling down master and issuing a pull request
fixed merge conflict
Merge branch 'master' of https://github.com/GraphAlchemist/Alchemy into ifj_landing
linked up contributing page to landing and docs
Merge pull request #150 from ifjorissen/ifj_landing

landing page, contributing, and examples