Use pprint_table from monty
Merge branch 'master' of https://github.com/gmatteo/abipy

Conflicts:
	abipy/tools/text.py
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
Fix docs
Improve docs
Improve docs
Fix doctest
Modified variables storage in Launcher
Now stored as (name, value) entries rather than InputVariable instances,
for better memory efficiency.
Merge pull request #46 from GkAntonius/master

Modified variables storage in Launcher