Update Automaton.elm

Fixed broken link in documentation.
Merge pull request #311 from cris/master

Update Automaton.elm
Updated the functions in  "Transforming Forms" to use Float

Per: https://groups.google.com/forum/#!topic/elm-discuss/pdWc2_7JJDU

This should now match the Form type usage of Float.
Merge pull request #312 from tomberek/patch-1

Updated the functions in  "Transforming Forms" to use Float
Merge branch 'master' into dev