create base documentation (issue #59)

This version introduces multiple enhancements:

added whole description about starting work in in framework and added screen shots with view of working part of page

Details of additions/deletions below:
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Added:      /docs/image/example1.png
Added:      /docs/image/example2.png
Added:      /docs/image/example3.png
Added:      /docs/image/example4.png
Added:      /docs/image/example5.png
Added:      /docs/image/example6.png
Added:      /docs/image/example7.png
Added:      /docs/image/example8.png
Added:      /docs/image/example9.png
Added:      /docs/image/example10.png
Added:      /docs/image/example11.png

Modified:   /docs/how-to-start.md
            -- Added --
                whole description about starting work in Blue Framework