increase required version of TF, keras, and scipy

Author: ckirksey3

requirements.txt

@@ -4,7 +4,7 @@ eventlet==0.19.0
 python-socketio==1.6.1
 numpy==1.13.1
 Pillow==2.2.1
-scipy==0.13.3
-keras==1.2.0
-tensorflow==1.0.0
+scipy==0.19.1
+keras==2.0.8
+tensorflow==1.3.0
 h5py==2.6.0