First pass at existential operator.
Expanding this out is tricky.
Heredoc test
Changed test to use JS comments in bock regex.
Test for prototype.
Expand :: to prototypes.
Merge pull request #5 from DavidSouther/feature/prototype

Feature/prototype
A recursive solution works like a charm.
Merge branch 'master' into feature/existential

Conflicts:
	lib/americano.js
Merge pull request #4 from DavidSouther/feature/existential

Existential operator
Made fn alias for function.
Updated todo list.
Handle single level heredocs.
Merge pull request #2 from DavidSouther/feature/heredocs

Heredocs
Add literal single quote and variable expansion.
Merge branch 'master' into feature/blockregex
BlockRegex implemented.