Include ".js" in imports

[canonic-epicure]

Hi,

I'm looking for an isomorphic seeded random generator. The one you created looks good, however, its not completely isomorphic - the imports in the code are missing the ending ".js" file extension. Please consider switching to a fully isomorphic code.

Under "isomorphic" I mean the code, that works equally well in browser and node.js.

[rawr51919]

PR #65 will provide the '.js' extension in imports and fix this issue, just gotta get back on it

[rawr51919]

This one's unfixable due to the way random-js handles it's builds. Infeasible to do so.