Updated flake8 version and added ignore errors for flake8 (#132)

Author: ganeshhubale

.travis.yml

@@ -8,6 +8,6 @@ before_install:
 install:
   - pip install -r requirements.txt
 script:
-  - flake8 readit setup.py
+  - flake8 --ignore=F403,F405,F841,E127,E126,E128 readit setup.py
   - python setup.py check -r -s
   - pytest

requirements.txt

@@ -1,6 +1,6 @@
 beautifultable>=0.5.0
 requests>=2.18.4
-flake8==3.5.0
+flake8==3.6.0
 click>=6.7
 pytest>=3.4.1
 readme_renderer>=20.0