Reassigning path-parent not necessary

Reset path-pointer in expose

Merge pull request #12 from praran26/master

Update Link-cut Tree.cpp

Merge pull request #7 from Rand0mUsername/master

Fix Splay Tree bugs

Updated Nussinov base case.

Added a .gitignore to remove DS_Store.

Added PageRank.

Updated readme.

Added a license, modified readme.

Updated the Simplex Algorithm.

Fixed a few bugs in the Simplex Algorithm.

Added the Nussinov Algorithm.

Added the Bitonic Sorter.