project initialization
+ FileCollector class
+ method for recursively collecting all files in a given directory
+ tests for collecting in simple folder structures

* work-around in build.gradle to get rid of gradle test error
* manifest data for creating jar file
* added lib directory to .gitignore
* fixed using log4j version 2
* refactored FileCollector, split previous .collect method into .collect(File) and .flatten(File, Set<File>)

- temporarily removed all tests from FileCollectorTest due to refactoring
* added argument parsing via JOpt

- omitting tests for now since stuff is working as intended and laziness is too stronk
* updated readme
* removed log4j2 and junit dependencies for now
Merge branch 'dev'