fix typo.
Merge pull request #158 from mknoszlig/master

Problem: typo in readme
set up direct setters for message.
have actions manipulate passed message directly.
rename badly named param.
Merge pull request #160 from mknoszlig/master

Problem: clojure functional style server backend is wasteful and limits functionality
Problem: dangling use of 'dictionary' in scripts

Solution: fix these.
Merge pull request #161 from hintjens/master

Problem: dangling use of 'dictionary' in scripts