Merge pull request #2 from domcek/master

added files
first modeling
Merge pull request #3 from ZdenekPrudil/master

first modeling
message
Merge pull request #4 from Okamensky/master

ehm
corrected
Merge pull request #5 from Okamensky/master

corrected
integrations
models closer to centre + integration methods
Merge pull request #6 from Okamensky/master

some stuff
update of modeling script and addition of numerical integration script