Use silicon as test for raman_optic
Merge branch 'master' of https://github.com/gmatteo/abipy
Use pprint_table from monty
Merge branch 'master' of https://github.com/gmatteo/abipy

Conflicts:
	abipy/tools/text.py
Bug in run_raman_optic
Merge branch 'master' of https://github.com/gmatteo/abipy
Merge pull request #44 from yanikou19/master

Use silicon instead of BiFeO3 for run_raman
Merge branch 'master' of https://github.com/gmatteo/abipy
Add natfix to abinit_vars.json
Merge remote-tracking branch 'upstream/master' into testing