Update README.

README.md

@@ -1,25 +1,38 @@
 # OpTion
 
+[![MIT License](https://img.shields.io/badge/license-MIT-blue.svg)](https://github.com/wittscien/OpTion/blob/main/LICENSE)
+![compatibility](https://img.shields.io/badge/Mathematica-10.x_11.x_12.x_13.x-blue.svg)
+
 [OpTion](https://github.com/wittscien/OpTion) (Operator construcTion) is a Mathematica package for operator construction in lattice QCD.
 
 # Installation
 
-There is a Test.nb file under the repository Tests and can run directly. To install the package,
+There is a Test.nb file under the repository Tests and it can run directly. To install the package,
+
+* Download the source zip file from GitHub.
 
-* Clone the zip file from GitHub.
+* Extract the zip file and move the repository to the Applications directory inside (or directly clone at)
 
-* Extract the zip file and move the repository to the Applications directory inside FileNameJoin[{$UserBaseDirectory, "Applications"}].
+```
+FileNameJoin[{$UserBaseDirectory, "Applications"}]
+```
 
-To load the package, run
+To load the package, simply run
 
+```
 <<OpTion`
+```
 
 # Documentation
 
-Please see Manual/OpTion_manual.pdf in the repository.
+Please see [Manual/OpTion_manual.pdf](https://github.com/wittscien/OpTion/blob/main/Manual/OpTion_manual.pdf) in the repository.
 
 # Acknowledging OpTion
 
-The construction method is described in
+Please acknowledge our work when you use OpTion in your research by citing the following paper where the construction method is described:
+
+* Haobo Yan *et al*, in preparation, [arXiv:2408.xxxx](https://arxiv.org/abs/2408.xxxx).
+
+# Contact
 
-* Haobo Yan, in preparation, [arXiv:2408.xxxx](https://arxiv.org/abs/2408.xxxx)
+For questions or comments, please contact [Haobo Yan]([email protected]) or find him in person at either the office or more likely, a badminton court.