Update README.md

Merge branch 'dev/kernel_per_batch_'

Restore validation skip

Mass square error

Mass backpropagate

Mass forward

Convert forward propagation to batch-buffers

Create batch-deltas-gpu-buffers

Use batch-ground-truth-gpu-buffer in last squarred error calculations

Use batch-ground-truth-gpu-buffer in last delta calculations

Use only single validation_error buffer

Remove AllocationItem

Make forward use ConfigBasedDataPipeline's internal buffers

Move execute_batch to ConfigBasedDataPipeline

Remove optimized kernel versions