Merge pull request #6 from andrewseidl/master

Update README.md
Update README.md
add det4
Merge pull request #7 from rpgaggioli/master

add det4
add cross_product
add cross_product
Revert "add cross_product"

This reverts commit 64a265b72e8aa7222c3252e74014a18d0edbd2bb.
claimed cross product
Claimed diameter convex hull
Merge pull request #10 from ychu8/master

Claimed diameter convex hull
Merge pull request #9 from Hanuse/master

add cross product
removed stray file
Update README.md

Added a link to graham-scan.
Merge pull request #11 from melanz/master

Update README.md