add boost library finder to the CMakeLists in 2nd solution template; changed puzzle.doc
Merge branch 'master' of https://github.com/marozau/cpp_craft_0314
added 3rd tempalte solution and updated 2nd solution
rename readme
add oresentation and code examples of 3-rd lecture
Merge branch 'master' of https://github.com/marozau/cpp_craft_0314
Merge branch 'master' of https://github.com/marozau/cpp_craft_0314
revised the second homework