README.md: Updated content

Signed-off-by: CharlesJB <Charles.Joly-Beauparlant@crchul.ulaval.ca>
AssemblyCompare.py: A script calculate the similarity between multiple assemblies using colored k-mers

Signed-off-by: CharlesJB <Charles.Joly-Beauparlant@crchul.ulaval.ca>