Update main to uncompiled script.

[msfragala]

Updates main to the uncompiled version for a few reasons:

• bower does not allow minified main files, so installing sometimes yields an error
• it should be in the user's hands to minify their scripts
• users can ultimately still access the minified version, so nothing it lost

[mrdoob]

Sounds good!

[mrdoob]

Thanks!