add requirements.txt

requirements.txt

+appdirs==1.4.3
+astroid==2.3.1
+attrs==19.2.0
+black==19.3b0
+Click==7.0
+coverage==5.0
+Django==2.2.5
+entrypoints==0.3
+flake8==3.7.8
+isort==4.3.21
+lazy-object-proxy==1.4.2
+mccabe==0.6.1
+pycodestyle==2.5.0
+pyflakes==2.1.1
+pylint==2.4.2
+pytz==2019.2
+selenium==3.141.0
+six==1.12.0
+sqlparse==0.3.0
+toml==0.10.0
+typed-ast==1.4.0
+urllib3==1.25.6
+wrapt==1.11.2