parse(io)

This isn't the most sophisticated implementation in the world, but I've found it handy.
fix for comparing against Char
remove el_type
tests for parse(IO)
fix for JSON path
Merge branch 'patch-4' of git://github.com/WestleyArgentum/JSON.jl into current master

Conflicts:
	src/JSON.jl
	test/JSON.jl
fix #16