Correct 404 on autoPlayDetect.js

[bugfixin]

Changes
This modifies a hardcoded reference to autoPlayDetect.js which has been renamed to autoplaydetect.js - because this is case sensitive it results in a 404.

Issues
Fixes #267

[dkanada]

A better option might be to rename the file to use camel casing, I think @vitorsemeano was moving to that in the webpack changes.

[bugfixin]

Ah, I was just going for consistency as the majority of the other paths for js files are also lowercased, but I'd be just as happy with renaming the file to camelcase. It may also be worth merging this pull even if it is changed (along with all of the other js paths) to camelcase in the future.

[vitorsemeano]

The reason is simple why I change some files to camel case. When the module is defined in site.js, the name is in camel case, pointing to the file on lower case. For webpack to solve automatically this files, you almost just need to change the filename to camel case, matching the definition found in site.js

[vitorsemeano]

I don't change every module to camel case because I only change what webpack tells me he can't resolve. So is a case to case change. I will commit the webpack.config.js so you can see the state of webpack conversion.