Add training scripts for networks currently being trained, for release v0.2.

scripts/small-1x.sh

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+#!/bin/sh
+
+python3.4 enhance.py \
+    --train "$OPEN_IMAGES_PATH/*/*.jpg" --model small \
+    --epochs=50 --batch-shape=192 --device=gpu0 \
+    --generator-downscale=2 --generator-upscale=2 \
+    --generator-blocks=8 --generator-filters=64 \
+    --perceptual-layer=conv2_2 --smoothness-weight=1e7 --adversary-weight=0.0 \
+    --train-blur=3 --train-noise=5.0
+
+python3.4 enhance.py \
+    --train "$OPEN_IMAGES_PATH/*/*.jpg" --model small \
+    --epochs=500 --batch-shape=192 --device=gpu0 \
+    --generator-downscale=2 --generator-upscale=2 \
+    --perceptual-layer=conv5_2 --smoothness-weight=2e4 --adversary-weight=2e2 \
+    --generator-start=5 --discriminator-start=0 --adversarial-start=5 \
+    --discriminator-size=32 \
+    --train-blur=3 --train-noise=5.0

scripts/small-2x.sh

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+#!/bin/sh
+
+python3.4 enhance.py \
+    --train "$OPEN_IMAGES_PATH/*/*.jpg" --model small \
+    --epochs=50 --batch-shape=192 --device=gpu0 \
+    --generator-downscale=1 --generator-upscale=2 \
+    --generator-blocks=8 --generator-filters=64 \
+    --perceptual-layer=conv2_2 --smoothness-weight=1e7 --adversary-weight=0.0 \
+    --train-blur=2 --train-noise=4.0
+
+python3.4 enhance.py \
+    --train "$OPEN_IMAGES_PATH/*/*.jpg" --model small \
+    --epochs=500 --batch-shape=192 --device=gpu0 \
+    --generator-downscale=1 --generator-upscale=2 \
+    --perceptual-layer=conv5_2 --smoothness-weight=2e4 --adversary-weight=2e2 \
+    --generator-start=5 --discriminator-start=0 --adversarial-start=5 \
+    --discriminator-size=32 \
+    --train-blur=2 --train-noise=4.0

scripts/small-4x.sh

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+#!/bin/sh
+
+python3.4 enhance.py \
+    --train "$OPEN_IMAGES_PATH/*/*.jpg" --model small \
+    --epochs=50 --batch-shape=192 --device=gpu0 \
+    --generator-downscale=0 --generator-upscale=2 \
+    --generator-blocks=8 --generator-filters=64 \
+    --perceptual-layer=conv2_2 --smoothness-weight=1e7 --adversary-weight=0.0 \
+    --train-blur=1 --train-noise=3.0
+
+python3.4 enhance.py \
+    --train "$OPEN_IMAGES_PATH/*/*.jpg" --model small \
+    --epochs=500 --batch-shape=192 --device=gpu0 \
+    --generator-downscale=0 --generator-upscale=2 \
+    --perceptual-layer=conv5_2 --smoothness-weight=2e4 --adversary-weight=2e2 \
+    --generator-start=5 --discriminator-start=0 --adversarial-start=5 \
+    --discriminator-size=32 \
+    --train-blur=1 --train-noise=3.0