Updated PyTorch Docs (deepjavalibrary#1000)

* Added auto softmax metadata for action_recognition

* Update PyTorch Docs

jupyter/load_pytorch_model.ipynb

@@ -42,6 +42,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
+    "import java.nio.file.*;\n",
     "import java.awt.image.*;\n",
     "import ai.djl.*;\n",
     "import ai.djl.inference.*;\n",
@@ -151,14 +152,9 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "// Search for models in the build/pytorch_models folder\n",
-    "System.setProperty(\"ai.djl.repository.zoo.location\", \"build/pytorch_models/resnet18\");\n",
-    "\n",
     "Criteria<Image, Classifications> criteria = Criteria.builder()\n",
     "        .setTypes(Image.class, Classifications.class)\n",
-    "         // only search the model in local directory\n",
-    "         // \"ai.djl.localmodelzoo:{name of the model}\"\n",
-    "        .optArtifactId(\"ai.djl.localmodelzoo:resnet18\")\n",
+    "        .optModelPath(Paths.get(\"build/pytorch_models/resnet18\"))\n",
     "        .optTranslator(translator)\n",
     "        .optProgress(new ProgressBar()).build();\n",
     "\n",
@@ -230,7 +226,7 @@
    "mimetype": "text/x-java-source",
    "name": "Java",
    "pygments_lexer": "java",
-   "version": "12.0.2+10"
+   "version": "11.0.11+9-LTS"
   },
   "pycharm": {
    "stem_cell": {