updated links to new qutip web page in the repository README file
updated links to new qutip web page in the repository README file

qutip/qutip,anubhavvardhan/qutip,cgranade/qutip,zasdfgbnm/qutip,qutip/qutip,anubhavvardhan/qutip,cgranade/qutip,zasdfgbnm/qutip