FIX : use gca and not plt
cleanup unused variables
API : refactor huge viz.py to have a proper module (still need to update tests)
split viz tests
remove old test_viz
update setup.py
Merge pull request #1420 from agramfort/split_viz

Split huge viz.py to a proper module
FIX: Use None for tmin to take the latest samples available in the buffer
TESTS: Use subprocess to do tests
fix warning and expose source parameter
remove nitpick for @agramfort
realpath
Merge pull request #1424 from dengemann/fix_plot_trans_single_layer

ENH/FIX: expose source param in plot_trans + fix error on warning if no EEG
FIX: Fewer warnings
FIX: Network for realtime test
TESTS: Fix travis by moving neuromag2ft inside decorator
Merge pull request #1425 from Eric89GXL/test-warn

FIX: Fewer warnings
Merge pull request #1422 from mainakjas/ft_measurement_latest

FIX: Latest samples in fieldtrip connector
make return figure if axes is None
return figure