Finalized the refactoring in issue #7. This fixes #7.

Renamed cssPre into cssPreprocessor for better clarity

Followup on the cssPre, renames autoPre into autoPrefixer. Expansion of #7

Further expansion of #7, this updates jsPre into javascriptPreprocessor for clarity

Even more refactorings in #7, renames cssDir to cssDirectory

Refactoring in #7, this time jsDir is renamed into javascriptDirectory

Refactoring in #7, renamed imgDir to imageDirectory

Refactoring in #7, now fontsDir turned into fontsDirectory

Rebasing in #7, renamed the jsPreDir into javascriptPreprocessorDirectory
Make sure people know this is in heavy development and made by someone inexperienced