Fixed H2 and H2O aqueous energies.
Removed unnecessary hydroxide correction code.
Cleanup.
Merge branch 'master' of github.com:materialsproject/pymatgen

Conflicts:
	pymatgen/entries/compatibility.py
Add error message for bad input sets.
Update docs.
Follow VASP's recommendation to use even meshes where possible for n <= 8.
Merge branch 'master' of github.com:materialsproject/pymatgen
Why is there a print statement?!?!?!
Merge remote-tracking branch 'mpmaster/master'