Create Pro-pra.md (#118)

contributors/Pro-pra.md

@@ -0,0 +1,10 @@
+2017-11-17
+
+I hereby agree to the terms of the Contributors License
+
+I furthermore declare that I am authorized and able to make this agreement and sign this declaration.
+
+Signed,
+
+Aleksandr Proklov
+https://github.com/Pro-pra