Fix the pypi uploading issue

Author: lolipopshock

.github/workflows/ci.yml

@@ -21,7 +21,7 @@ jobs:
       run: |
         python -m pip install --upgrade pip
         pip install .
-        pip install .[modeling]
+        pip install 'git+https://github.com/facebookresearch/detectron2.git@v0.1.3#egg=detectron2' 
         
     - name: Lint with flake8
       run: |

README.md

@@ -15,3 +15,17 @@
 ---
 
 Layout Parser is deep learning based tool for document image layout analysis tasks. 
+
+## Quick Start 
+
+1. Install the package
+    ```bash
+    pip install layoutparser
+
+    # Install Detectron2 for using DL Layout Detection Model
+    pip install 'git+https://github.com/facebookresearch/detectron2.git@v0.1.3#egg=detectron2' 
+
+    # Install the ocr components when necessary 
+    pip install layoutparser[ocr]      
+    ```
+

setup.py

@@ -26,16 +26,13 @@
         "pyyaml>=5.1",
         "torch==1.4",
         "torchvision==0.5",
+        "pycocotools",
       ],
       extras_require={
         "ocr": [
           'google-cloud-vision',
           'pytesseract'
         ], 
-        "modeling": [
-          "pycocotools",
-          "detectron2 @ git+https://github.com/facebookresearch/detectron2.git@v0.1.3#egg=detectron2",
-        ]
       },
       include_package_data=True
       )