Added methods for prime defx sumslice listPrimes and changed readme
first question
added the answers for a few more questions

Signed-off-by: aczirkle <aczirkle@gmail.com>
Added the answers to the last couple of questions, fixed spelling mistakes

Signed-off-by: aczirkle <aczirkle@gmail.com>
Added the square method
updated readme

Signed-off-by: aczirkle <aczirkle@gmail.com>
Merge pull request #25 from aczirkle/master

Zirkleac pull request