Revert "Statically import annotations, ES6 style"

This reverts commit b6ca1c334b4fafd99fd027e7e82f2356b60db426.

Conflicts:
	src/annotation/index.js
Static traceur compilation

`src` is compiled in `dist` directory.

All modules are in CommonJS style and can be `require`d by any other
module.

ES6 exports are used but not ES6 imports, so `require` is used for both
internal and external modules. Also allowing to import modules
conditionnally and dynamically.

Removed `traceur` compiler from runtime dependencies, and depend only on
`traceur-runtime` which is much lightweight. `traceur` is only needed
for development. Also `fdocopt` was replaced by good old `docopt` since
we have multiline strings in ES6.