Remove require alias

[bnjm]

Scope & Features

This PR removes the require alias's which were introduced as a work-around for the metro bundler, used by React Native, which does not support dynamic require statements as they were used in 3dio-js.

Webpack doesn't allow for any references to require which are not being used for import purposes..leading to the webpack error cannot find module ".": #126

We attempted to get around this by accessing require as global.require however this caused some issues in node.js.

Design

Reverts back to using require as it should be :)

How to test

Webpack:

npm install -g create-react-app
create-react-app require-test
npm install git://github.com/archilogic-com/3dio-js.git#require-fix

Browser & node.js:

Check that the samples in the examples folder are running.

Notes

This will cause an incompatibility for React Native + 3dio.js. I will update my RN compatible fork at https://github.com/bnjm/3dio-js incase there are any affected users.