Add elm-lang/html to dependencies

[junjchen]

Add elm-lang/html to dependencies list in elm-packages.json

Reason: Was shown error messages below when try to load Main.Elm in ./examples/simple

I cannot find module 'Html'.

Module 'Main' is trying to import it.

Potential problems could be:
  * Misspelled the module name
  * Need to add a source directory or new dependency to elm-package.json

[cmditch]

If you cd examples/simple and ./runserver the elm-packages.json in there has the needed html library.

elm-ethereum itself has no html dependencies, so no need to add it in the main lib.

Hope that helps, Cheers!

[junjchen]

Ah make sense, cheers