.travis: don't test node v0.9.x
add appveyor.yml file
README: use .svg for Travis badge
README: add appveyor test badge
package: remove "engines" section

It's dumb... doesn't do anything...
nan wip
binding: more nan refactoring progress

Down to just 1 build error now...
package: update "nan" to v1.1.0
biding: attempt at refactoring for nan v1.1.0 API