added a brain, need to listen to it

brain.py

@@ -0,0 +1,26 @@
+import numpy as np
+
+
+class Neural_Network(object):
+    # inspired from https://enlight.nyc/projects/neural-network/
+    def __init__(self):
+        #parameters
+        self.inputSize = 3
+        self.outputSize = 2
+        self.hiddenSize = 3
+
+        #weights
+        self.W1 = np.random.randn(self.inputSize, self.hiddenSize) # weights from input to hidden layer
+        self.W2 = np.random.randn(self.hiddenSize, self.outputSize) # weights from hidden to output layer
+
+    def predict(self, X):
+        #forward propagation through our network
+        self.z = np.dot(X, self.W1) # dot product of X (input) and first set of 3x2 weights
+        self.z2 = self.sigmoid(self.z) # activation function
+        self.z3 = np.dot(self.z2, self.W2) # dot product of hidden layer (z2) and second set of 3x1 weights
+        o = self.sigmoid(self.z3) # final activation function
+        return o
+
+    def sigmoid(self, s):
+        # activation function
+        return 1/(1+np.exp(-s)) -0.5