Case sensitive routes cause folder duplication

[zjrunner]

Routes shouldn't be case sensitive. in helpers.js@getTreeFromPaths we can just index treeNode with the thisPath[I].toUpperCase() to consolidate, it doesn't bleed into the output at the end.

I have a PR in a fork I'll attach later if acceptable as a change.

[Dhroov7]

@zjrunner as per RFC3986 (https://tools.ietf.org/html/rfc3986#section-6.2.2.1) paths in URI can be case sensitive. So, that means case sensitive routes leads to different results.Hence creating multiple folders is the ideal way to handle it.