diff --git a/.github/workflows/build-and-test.yaml b/.github/workflows/build-and-test.yaml
index dee440a..5d412ff 100644
--- a/.github/workflows/build-and-test.yaml
+++ b/.github/workflows/build-and-test.yaml
@@ -12,7 +12,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        python-version: [3.8, 3.9]
+        python-version: [3.7, 3.8, 3.9]
     steps:
     - uses: actions/checkout@v2
     - name: Set up Python
diff --git a/README.md b/README.md
index ba66a1d..65cdb8e 100644
--- a/README.md
+++ b/README.md
@@ -6,6 +6,8 @@
 
 This is the code repository of abductive learning Package.
 
+To learn how to use it, please refer to - [document](https://www.lamda.nju.edu.cn/abl_test/docs/build/html/Overview/Abductive-Learning.html).
+
 ## Installation
 
 Case a: If you develop and run abl directly, install it from source:
@@ -21,18 +23,16 @@ Case b (TO DO):  If you use abl as a dependency or third-party package, install
 ```bash 
 pip install abl
 ```
+Case c (for test):  If you use abl as a dependency or third-party package, install it with pip:
+```bash 
+pip install -i https://test.pypi.org/simple/ abl
+```
 
 ## Example 
 + MNIST ADD - [here](https://github.com/AbductiveLearning/ABL-Package/blob/Dev/examples/mnist_add/mnist_add_example.ipynb)
 + Hand Written Formula - [here](https://github.com/AbductiveLearning/ABL-Package/blob/Dev/examples/hwf/hwf_example.ipynb)
 + Hand written Equation Decipherment - [here](https://github.com/AbductiveLearning/ABL-Package/tree/Dev/examples/hed)
 
-## Authors 
-
-- [Yu-Xuan Huang](http://www.lamda.nju.edu.cn/huangyx/) (Nanjing University)
-- [](http://www.lamda.nju.edu.cn//) (Nanjing University)
-
-
 ## NOTICE 
 They can only be used for academic purpose. For other purposes, please contact with LAMDA Group(www.lamda.nju.edu.cn).
 
@@ -40,8 +40,6 @@ They can only be used for academic purpose. For other purposes, please contact w
 
 - [ ] Improve speed and accuracy
 - [ ] Add comparison with DeepProbLog, NGS,... (Accuracy and Speed)
-- [x] Add Inference/Abduction example with FOL engine (e.g., Prolog)
-- [x] Add zoopt optimization
 - [ ] Rearrange structure and make it a python package
 - [ ] Documents
 
diff --git a/abl/__version__.py b/abl/__version__.py
index 189beb8..0deec50 100644
--- a/abl/__version__.py
+++ b/abl/__version__.py
@@ -1,3 +1,3 @@
-VERSION = (0, 0, 1)
+VERSION = (0, 1, 0)
 
 __version__ = ".".join(map(str, VERSION))
diff --git a/setup.py b/setup.py
index 0a6f9e0..27435f0 100644
--- a/setup.py
+++ b/setup.py
@@ -11,8 +11,8 @@ def read(rel_path: str) -> str:
 
 # Package meta-data.
 NAME = "abl"
-DESCRIPTION = "abl package project"
-REQUIRES_PYTHON = ">=3.8.0"
+DESCRIPTION = "abductive learning package project"
+REQUIRES_PYTHON = ">=3.6.0"
 VERSION = None
 
 
@@ -78,6 +78,8 @@ if __name__ == "__main__":
             "Topic :: Software Development",
             "Topic :: Scientific/Engineering",
             "Operating System :: POSIX :: Linux",
+            "Programming Language :: Python :: 3.7",
             "Programming Language :: Python :: 3.8",
+            "Programming Language :: Python :: 3.9",
         ],
     )