added requirements

requirements.txt

+alabaster==0.7.12
+Babel==2.7.0
+backcall==0.1.0
+binarycpython==0.1
+certifi==2019.9.11
+chardet==3.0.4
+clang==6.0.0.2
+cycler==0.10.0
+decorator==4.4.1
+docutils==0.15.2
+hawkmoth==0.4
+idna==2.8
+imagesize==1.1.0
+ipython==7.9.0
+ipython-genutils==0.2.0
+jedi==0.15.1
+Jinja2==2.10.3
+kiwisolver==1.1.0
+m2r==0.2.1
+MarkupSafe==1.1.1
+matplotlib==3.1.2
+mistune==0.8.4
+numpy==1.17.4
+packaging==19.2
+pandas==0.25.3
+parso==0.5.1
+pexpect==4.7.0
+pickleshare==0.7.5
+prompt-toolkit==2.0.10
+ptyprocess==0.6.0
+Pygments==2.4.2
+pyparsing==2.4.5
+python-dateutil==2.8.1
+pytz==2019.3
+requests==2.22.0
+six==1.13.0
+snowballstemmer==2.0.0
+Sphinx==2.2.1
+sphinx-rtd-theme==0.4.3
+sphinxcontrib-applehelp==1.0.1
+sphinxcontrib-devhelp==1.0.1
+sphinxcontrib-htmlhelp==1.0.2
+sphinxcontrib-jsmath==1.0.1
+sphinxcontrib-qthelp==1.0.2
+sphinxcontrib-serializinghtml==1.1.3
+traitlets==4.3.3
+urllib3==1.25.7
+wcwidth==0.1.7