GitHub issue #90: contribution guide refers to removed files

Author: shahramn

Diff for: ci/requirements-dev.txt

@@ -0,0 +1,15 @@
+check-manifest
+detox
+IPython
+matplotlib
+notebook
+pip-tools
+pyroma
+pytest-mypy
+setuptools
+tox
+tox-pyenv
+wheel
+zest.releaser
+black
+

Diff for: ci/requirements-tests.txt

@@ -0,0 +1,30 @@
+#
+# This file is autogenerated by pip-compile
+# To update, run:
+#
+#    pip-compile --output-file ci/requirements-tests.txt setup.py ci/requirements-tests.in
+#
+apipkg==1.5               # via execnet
+atomicwrites==1.3.0       # via pytest
+attrs==19.1.0
+cffi==1.12.2
+coverage==4.5.3           # via pytest-cov
+execnet==1.5.0            # via pytest-cache
+future==0.17.1
+mccabe==0.6.1             # via pytest-mccabe
+more-itertools==5.0.0     # via pytest
+numpy==1.16.2
+pep8==1.7.1               # via pytest-pep8
+pluggy==0.9.0             # via pytest
+py==1.8.0                 # via pytest
+pycparser==2.19           # via cffi
+pyflakes==2.1.1           # via pytest-flakes
+pytest-cache==1.0         # via pytest-mccabe, pytest-pep8
+pytest-cov==2.6.1
+pytest-flakes==4.0.0
+pytest-mccabe==0.1
+pytest-pep8==1.0.6
+pytest-runner==4.4
+pytest==4.3.1
+six==1.12.0               # via pytest
+typing==3.6.6