added a first README.md file as the new main descriptive README about the AmiSSL library.
added a first README.md file as the new main descriptive README about the AmiSSL library.

jens-maus/amissl,jens-maus/amissl,jens-maus/amissl,jens-maus/amissl,jens-maus/amissl,jens-maus/amissl