Add Assignment 2.5 Solution i.e. PyTorch

Cleared PyTorch.ipynb for redo

Add Assignment 2.5 solution

Add Convolutional Network

Add Dropout

Add BatchNormalization

Add Impl of backward and forward pass for batch normalization

Add Assignment 2.1

Add modular impl of 2 layer neural net i.e. Assignment 2.1/2

Add Assignment 1.5

Update README for Assignment 1.4

Add Neural Net (i.e Assignment 1.4)

Add Softmax i.e. Assignment 1.3

Add SVM i.e. Assignment 1.2

Add 1_knn