Moved flake8 ignore flags to .flake8

Author: harpolea

.flake8

@@ -1,4 +1,4 @@
 [flake8]
 max-line-length = 120
-ignore = E126, E127, E128, E129, E226, E241, E265, E741, F403
-exclude = docs/,lm_combustion,radhydro
+ignore = E126, E127, E128, E129, E226, E241, E265, E741, F403, W504
+exclude = docs/,lm_combustion,radhydro

.travis.yml

@@ -31,7 +31,7 @@ before_script:
   - ./mk.sh $MK_ARGS
 
 script:
-  - flake8 --ignore=W504,F403,E226,E126,E127,E128,E129,E241,E741 .
+  - flake8 .
   - pytest -v --cov=. --cov-config .coveragerc --nbval --ignore=docs --ignore=./multigrid/variable_coeff_elliptic.ipynb --ignore=examples/mesh --ignore=examples/multigrid --ignore=$NB_IGNORE
 #   - travis-sphinx build