New logo link
Merge branch 'master' of https://github.com/SebWouters/CheMPS2

* 'master' of https://github.com/SebWouters/CheMPS2:
  Added the singlet diradical correlation function
  Install instructions
  Installation instructions
  Print the correlations and two-orbital mutual info during DMRGSCF
  Localization and ordering of the active space added for DMRGSCF.
  Irreps table now also in gh-pages.
  Added test9 to README.md
  Added the EdmistonRuedenberg class.
  Reshuffling stuff as a prelude to Edmiston-Ruedenberg.
  Little error corrected
  Printer for the correlation functions and mutual information.
  Two-orbital mutual information is now added.
  The tensors required for the two-orbital mutual information.
  Adjusted det(unitary) = -1 for the logarithm.
Merge branch 'master' of https://github.com/SebWouters/CheMPS2

* 'master' of https://github.com/SebWouters/CheMPS2:
  Python interface to CheMPS2 added (called PyCheMPS2).
  Updated headers
  Little text error corrected.
  Added extra functionality for PyCheMPS2.
Small fixes in README.md
Add links to README.md
Update PSI link
Undo wrong fixes in README.md
Merge pull request #10 from wpoely86/stuff

README.md fixes