update readme

Author: BruceZhang1993

README.md

@@ -4,3 +4,52 @@ Yet another python index generator
 
 [![Travis](https://img.shields.io/travis/BruceZhang1993/index-generator.svg?style=for-the-badge)](https://travis-ci.org/BruceZhang1993/index-generator)
 [![PyPI](https://img.shields.io/pypi/v/index-generator.svg?style=for-the-badge)](https://pypi.org/project/index-generator)
+
+## Install
+
+### GitHub master branch
+
+```bash
+git clone https://github.com/BruceZhang1993/index-generator.git
+cd index-generator
+sudo python setup.py install
+# OR
+sudo pip install .
+```
+
+### GitHub release
+
+```bash
+# Coming soon
+```
+
+### Pypi
+
+```bash
+# Coming soon
+```
+
+### Distributions
+
+#### Arch Linux
+
+```bash
+# Coming soon
+```
+
+#### Other Distribution
+
+## Usage
+
+See [Wiki Page](https://github.com/BruceZhang1993/index-generator/wiki)
+
+## License
+
+[MIT](https://github.com/BruceZhang1993/index-generator/blob/master/LICENSE)
+
+## Contributors
+    Sorting by alphabet order. 
+- Bruce Zhang ([BruceZhang1993](https://github.com/BruceZhang1993))
+- Edward P ([edward-p](https://github.com/edward-p))
+
+[More...](https://github.com/BruceZhang1993/index-generator/graphs/contributors)