IntelliJ Files Cleanup

[ZKjellberg]

Modified .gitignore files and purged all unnecessary IntelliJ files.

NOTE: This will require a clean import to regenerate the files, but they will no longer cause activity for git changes.

Is there a reason why the Sample app is not a module in the root Android Studio project? It would be much simpler to have them together, compared to having two seperate Android Studio Projects, especially with the relative path used in the Sample.

[SandroMachado]

Thanks again @ZKjellberg for the help.

Regarding the question about the location of the Sample it cannot be on the root of the project due to the @jitpack-io (used to distribute the library). JitPack builds the AAR library files looking for the build.gradle of the project in the root (or at second level) directory. For that reason I usually put the sample projects separated from the libraries and at least at the third level directory.