V1.6 - Improved Scripts and Application

FF-177 Updated Scripts, and Application (#11)

* ffighter is now installed in /usr/bin

* Bumped to version v1.6, fixed main script.

* Added releaseWorkflow

* fixed release workflow

* Added one more check, requested by @qvalentin

* Added Download Script

* Updated README.

* Bumped version to 1.6

* fixed bug with copy pasted code.