Merge pull request #73 from jiang42/master

add Caesar cipher solution in c++
Added a java solution to the *Create Zip File Maker* problem.
Merge pull request #74 from averageprogrammer/patch-8

Added a java solution to the *Create Zip File Maker* problem.
Update README.md
Merge pull request #75 from ripperhf/patch-1

Update README.md