README: update git url
README: update git url

ksurya/SciPyCentral,scipy/SciPyCentral,Srisai85/SciPyCentral,Srisai85/SciPyCentral,ksurya/SciPyCentral,wqshi/test,Srisai85/SciPyCentral,scipy/SciPyCentral,wqshi/test,scipy/SciPyCentral,wqshi/test,ksurya/SciPyCentral