Addinng new section

[dragazhar]

• [x] rename 'packages' to „Example packages“ or „Demo packages“. This section must cover simple examples.
• [x] for 'real life' packages there must be separate section „Applications“, where must be small description of the problem.
• [x] For example, „Modeling and simulation of fluid power systems“ with description and links to publications.
• [x] may be also security applications, web services and process management also will go here

[dragazhar]

There will be only one section, but renamed