Fixes some CI links in the readme.

[SKIP CI]

[SKIP CI]

Updates the Readme to correspond to the changes made with 2019.10

Add support for cross-compilation and clang compiler

    - Adds proper CLI to copy and paste for packages in addition to the
    list.

[SKIP CI]

Provide more detailed and useful error messages to the user when parsing JSON-files (e.g. kernel.json);

Excludes tlkm

- disable examples for now, requires ncurses from other plattform
- only cmake toolchain supported, tlkm uses makefile

Merge branches 'develop' and 'feature/json-parser-error-messages' of github.com:esa-tu-darmstadt/tapasco into feature/json-parser-error-messages

 Conflicts:
	toolflow/scala/src/main/scala/tapasco/activity/composers/VivadoComposer.scala
	toolflow/scala/src/main/scala/tapasco/base/Platform.scala
	toolflow/scala/src/main/scala/tapasco/base/json/package.scala
	toolflow/scala/src/test/resources/json-examples/correct-platform.json
	toolflow/scala/src/test/scala/tapasco/base/PlatformTest.scala