Solutions for problems 1-5
Added solutions for problems 6-10.
Updated README.md
Updated README.md
Updated README.md
Updated README.md
Updated README.md
Added solutions for problems 11-15.
Added solutions for 16-17.
Added solutions for problems 20-23, 25
Solutions for problems 27, 29, 30, 34.
Added extra classes used in solution 27.