Added a link to YAP-LBFGS.
Added a link to YAP-LBFGS.

git-svn-id: b5d258ec564778116f91bc06584e5cc53ee62a5d@57 ecf4c44f-38d1-4fa4-9757-a0b4dd0349fc

Maratyszcza/liblbfgs,datamade/pylbfgs,dkogan/liblbfgs,xuanhan863/liblbfgs,larsmans/pylbfgs,datamade/pylbfgs,chbrown/liblbfgs,samuelpowell/liblbfgs,dkogan/liblbfgs,larsmans/pylbfgs,chokkan/liblbfgs,jey/liblbfgs,samuelpowell/liblbfgs,zerkh/liblbfgs,xuanhan863/liblbfgs,chbrown/liblbfgs,jey/liblbfgs,Maratyszcza/liblbfgs,Maratyszcza/liblbfgs,wolfgang-noichl/pylbfgs,jey/liblbfgs,dkogan/liblbfgs,chokkan/liblbfgs,zerkh/liblbfgs,zerkh/liblbfgs,chbrown/liblbfgs,datamade/pylbfgs,chokkan/liblbfgs,xuanhan863/liblbfgs,samuelpowell/liblbfgs,wolfgang-noichl/pylbfgs