Add requirements.txt file

requirements.txt is a standard for declaring python dependencies

README.md

@@ -35,7 +35,11 @@ If you make use of this code or the GraphSage algorithm in your work, please cit
 
 ### Requirements
 
-Recent versions of TensorFlow, numpy, scipy, and networkx are required (but networkx must be <=1.11). To guarantee that you have the right package versions, you can use [docker](https://docs.docker.com/) to easily set up a virtual environment. See the Docker subsection below for more info. 
+Recent versions of TensorFlow, numpy, scipy, sklearn, and networkx are required (but networkx must be <=1.11). You can install all the required packages using the following command:
+
+	$ pip install -r requirements.txt
+
+To guarantee that you have the right package versions, you can use [docker](https://docs.docker.com/) to easily set up a virtual environment. See the Docker subsection below for more info.
 
 #### Docker
 

requirements.txt

@@ -0,0 +1,25 @@
+absl-py==0.2.2
+astor==0.6.2
+backports.weakref==1.0.post1
+bleach==1.5.0
+decorator==4.3.0
+enum34==1.1.6
+funcsigs==1.0.2
+futures==3.2.0
+gast==0.2.0
+grpcio==1.12.1
+html5lib==0.9999999
+Markdown==2.6.11
+mock==2.0.0
+networkx==1.11
+numpy==1.14.5
+pbr==4.0.4
+protobuf==3.6.0
+scikit-learn==0.19.1
+scipy==1.1.0
+six==1.11.0
+sklearn==0.0
+tensorboard==1.8.0
+tensorflow==1.8.0
+termcolor==1.1.0
+Werkzeug==0.14.1